Free Essay



Submitted By engfiras87
Words 2476
Pages 10
Wi-FiFrom Wikipedia, the free encyclopediaJump to: navigation, search
For the radio station, see WIFI (AM). Wi-Fi logoWi-Fi ( /ˈwaɪfaɪ/, also spelled Wifi or WiFi) is a popular technology that allows an electronic device to exchange data wirelessly (using radio waves) over a computer network, including high-speed Internet connections. The Wi-Fi Alliance defines Wi-Fi as any "wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers' (IEEE) 802.11 standards".[1] However, since most modern WLANs are based on these standards, the term "Wi-Fi" is used in general English as a synonym for "WLAN".

A device that can use Wi-Fi (such as a personal computer, video game console, smartphone, tablet, or digital audio player) can connect to a network resource such as the Internet via a wireless network access point. Such an access point (or hotspot) has a range of about 20 meters (65 feet) indoors and a greater range outdoors. Hotspot coverage can comprise an area as small as a single room with walls that block radio waves or as large as many square miles — this is achieved by using multiple overlapping access points.

"Wi-Fi" is a trademark of the Wi-Fi Alliance and the brand name for products using the IEEE 802.11 family of standards. Only Wi-Fi products that complete Wi-Fi Alliance interoperability certification testing successfully may use the "Wi-Fi CERTIFIED" designation and trademark.

Wi-Fi has had a checkered security history. Its earliest encryption system, WEP, proved easy to break. Much higher quality protocols, WPA and WPA2, were added later. However, an optional feature added in 2007, called Wi-Fi Protected Setup (WPS), has a flaw that allows a remote attacker to recover the router's WPA or WPA2 password in a few hours on most implementations.[2] Some manufacturers have recommended turning off the WPS feature. The Wi-Fi Alliance has since updated its test plan and certification program to ensure all newly-certified devices resist brute-force AP PIN attacks.

Contents [hide]
1 History
1.1 The name
1.2 Wi-Fi certification
2 Uses
2.1 Internet access
2.1.1 City-wide Wi-Fi
2.1.2 Campus-wide Wi-Fi
2.2 Direct computer-to-computer communications
3 Advantages and limitations
3.1 Advantages
3.2 Limitations
3.3 Range
3.4 Data security risks
3.5 Interference
4 Hardware
4.1 Standard devices
4.2 Distance records
4.3 Embedded systems
4.4 Multiple access points
5 Network security
5.1 Securing methods
5.2 Piggybacking
6 Safety
7 See also
8 Notes
9 References
10 Further reading
11 External links

[edit] HistoryMain article: History of IEEE 802.11
802.11 technology has its origins in a 1985 ruling by the US Federal Communications Commission that released the ISM band for unlicensed use.[3] In 1991 NCR Corporation with AT&T invented the precursor to 802.11 intended for use in cashier systems. The first wireless products were under the name WaveLAN.

Vic Hayes has been called the "father of Wi-Fi". He was involved in designing the initial standards within the IEEE.[4][5]

A large number of patents by many companies are used in 802.11 standard.[6] In 1992 and 1996, Australian organisation CSIRO obtained patents for a method later used in Wi-Fi to "unsmear" the signal.[7] In April 2009, 14 tech companies agreed to pay CSIRO $250 million for infringements on CSIRO patents.[8] This led to WiFi being attributed as an Australian invention,[9] though this has been the subject of some controversy.[10][11] CSIRO won a further $220 million settlement for Wi-Fi patent infringements in 2012 with global firms in the United States required to pay the CSIRO licensing rights estimated to be worth an additional $1 billion in royalties.[12][13][8]

In 1999, the Wi-Fi Alliance was formed as a trade association to hold the Wi-Fi trademark under which most products are sold.[14]

[edit] The nameThe term Wi-Fi, first used commercially in August 1999,[15] was coined by a brand-consulting firm called Interbrand Corporation. The Wi-Fi Alliance had hired Interbrand to determine a name that was "a little catchier than 'IEEE 802.11b Direct Sequence'".[16][17][18] Belanger also stated that Interbrand invented Wi-Fi as a play on words with Hi-Fi, and also created the Wi-Fi logo.

The Wi-Fi Alliance initially used an advertising slogan for Wi-Fi, "The Standard for Wireless Fidelity",[16] but later removed the phrase from their marketing. Despite this, some documents from the Alliance dated 2003 and 2004 still contain the term Wireless Fidelity.[19][20] There was no official statement related to the dropping of the term.

The yin-yang Wi-Fi logo indicates the certification of a product for interoperability.[19]

Non-Wi-Fi technologies intended for fixed points such as Motorola Canopy are usually described as fixed wireless. Alternative wireless technologies include mobile phone standards such as 2G, 3G or 4G.

[edit] Wi-Fi certificationSee also: Wi-Fi Alliance
The IEEE does not test equipment for compliance with their standards. The non-profit Wi-Fi Alliance was formed in 1999 to fill this void — to establish and enforce standards for interoperability and backward compatibility, and to promote wireless local-area-network technology. As of 2010[update] the Wi-Fi Alliance consisted of more than 375 companies from around the world.[21][22] The Wi-Fi Alliance enforces the use of the Wi-Fi brand to technologies based on the IEEE 802.11 standards from the Institute of Electrical and Electronics Engineers. This includes wireless local area network (WLAN) connections, device to device connectivity (such as Wi-Fi Peer to Peer aka Wi-Fi Direct), Personal area network (PAN), local area network (LAN) and even some limited wide area network (WAN) connections. Manufacturers with membership in the Wi-Fi Alliance, whose products pass the certification process, gain the right to mark those products with the Wi-Fi logo.

Specifically, the certification process requires conformance to the IEEE 802.11 radio standards, the WPA and WPA2 security standards, and the EAP authentication standard. Certification may optionally include tests of IEEE 802.11 draft standards, interaction with cellular-phone technology in converged devices, and features relating to security set-up, multimedia, and power-saving.[23]

Not every Wi-Fi device is submitted for certification. The lack of Wi-Fi certification does not necessarily imply a device is incompatible with other Wi-Fi devices. If it is compliant or partly compatible, the Wi-Fi Alliance may not object to its description as a Wi-Fi device[citation needed] though technically only certified devices are approved. Derivative terms, such as Super Wi-Fi, coined by the US Federal Communications Commission (FCC) to describe proposed networking in the UHF TV band in the US, may or may not be sanctioned.

Wi-Fi Signal logo[edit] UsesTo connect to a Wi-Fi LAN, a computer has to be equipped with a wireless network interface controller. The combination of computer and interface controller is called a station. All stations share a single radio frequency communication channel. Transmissions on this channel are received by all stations within range. The hardware does not signal the user that the transmission was delivered and is therefore called a best-effort delivery mechanism. A carrier wave is used to transmit the data in packets, referred to as "Ethernet frames". Each station is constantly tuned in on the radio frequency communication channel to pick up available transmissions.

[edit] Internet accessA Wi-Fi-enabled device can connect to the Internet when within range of a wireless network connected to the Internet. The coverage of one or more (interconnected) access points — called hotspots — can extend from an area as small as a few rooms to as large as many square miles. Coverage in the larger area may require a group of access points with overlapping coverage. Outdoor public Wi-Fi technology has been used successfully in wireless mesh networks in London, UK.

Wi-Fi provides service in private homes, high street chains and independent businesses, as well as in public spaces at Wi-Fi hotspots set up either free-of-charge or commercially. Organizations and businesses, such as airports, hotels, and restaurants, often provide free-use hotspots to attract customers. Enthusiasts or authorities who wish to provide services or even to promote business in selected areas sometimes provide free Wi-Fi access.

Routers that incorporate a digital subscriber line modem or a cable modem and a Wi-Fi access point, often set up in homes and other buildings, provide Internet access and internetworking to all devices connected to them, wirelessly or via cable. With the emergence of MiFi and WiBro (a portable Wi-Fi router) people can easily create their own Wi-Fi hotspots that connect to Internet via cellular networks. Now Android, Bada, iOS (iPhone), and Symbian devices can create wireless connections.[24] Wi-Fi also connects places that normally don't have network access, such as kitchens and garden sheds.

[edit] City-wide Wi-FiFurther information: Municipal wireless network An outdoor Wi-Fi access pointIn the early 2000s, many cities around the world announced plans to construct city-wide Wi-Fi networks. There are many successful examples; in 2004, Mysore became India's first Wi-fi-enabled city and second in the world after Jerusalem. A company called WiFiyNet has set up hotspots in Mysore, covering the complete city and a few nearby villages.[25]

In 2005 Sunnyvale, California, became the first city in the United States to offer city-wide free Wi-Fi,[26] and Minneapolis has generated $1.2 million in profit annually for its provider.[27]

In May 2010, London, UK, Mayor Boris Johnson pledged to have London-wide Wi-Fi by 2012.[28] Several boroughs including Westminster and Islington[29][30] already have extensive outdoor Wi-Fi coverage.

Officials in South Korea's capital are moving to provide free Internet access at more than 10,000 locations around the city, including outdoor public spaces, major streets and densely populated residential areas. Seoul will grant leases to KT, LG Telecom and SK Telecom. The companies will invest $44 million in the project, which will be completed in 2015.[31]

[edit] Campus-wide Wi-FiMany traditional college campuses in the United States provide at least partial wireless Wi-Fi Internet coverage. Carnegie Mellon University built the first campus-wide wireless Internet network, called Wireless Andrew at its Pittsburgh campus in 1993 before Wi-Fi branding originated.[32][33][34]

In 2000, Drexel University in Philadelphia became the United States's first major university to offer completely wireless Internet access across its entire campus.[35]

[edit] Direct computer-to-computer communicationsWi-Fi also allows communications directly from one computer to another without an access point intermediary. This is called ad hoc Wi-Fi transmission. This wireless ad hoc network mode has proven popular with multiplayer handheld game consoles, such as the Nintendo DS, Playstation Portable, digital cameras, and other consumer electronics devices. Some devices can also share their Internet connection using ad-hoc, becoming hotspots or "virtual routers".[36]

Similarly, the Wi-Fi Alliance promotes a specification called Wi-Fi Direct for file transfers and media sharing through a new discovery- and security-methodology.[37] Wi-Fi Direct launched in October 2010.[38]

[edit] Advantages and limitations
A keychain-size Wi-Fi detector[edit] AdvantagesWi-Fi allows cheaper deployment of local area networks (LANs). Also spaces where cables cannot be run, such as outdoor areas and historical buildings, can host wireless LANs.

Manufacturers are building wireless network adapters into most laptops. The price of chipsets for Wi-Fi continues to drop, making it an economical networking option included in even more devices.[citation needed]

Different competitive brands of access points and client network-interfaces can inter-operate at a basic level of service. Products designated as "Wi-Fi Certified" by the Wi-Fi Alliance are backwards compatible. Unlike mobile phones, any standard Wi-Fi device will work anywhere in the world.

Wi-Fi Protected Access encryption (WPA2) is considered secure, provided a strong passphrase is used. New protocols for quality-of-service (WMM) make Wi-Fi more suitable for latency-sensitive applications (such as voice and video). Power saving mechanisms (WMM Power Save) extend battery life.

[edit] LimitationsSpectrum assignments and operational limitations are not consistent worldwide: most of Europe allows for an additional two channels beyond those permitted in the US for the 2.4 GHz band (1–13 vs. 1–11), while Japan has one more on top of that (1–14). As of 2007, Europe, is essentially homogeneous in this respect.

A Wi-Fi signal occupies five channels in the 2.4 GHz band. Any two channels numbers that differ by five or more, such as 2 and 7, do not overlap. The oft-repeated adage that channels 1, 6, and 11 are the only non-overlapping channels is, therefore, not accurate. Channels 1, 6, and 11 are the only group of three non-overlapping channels in the U.S.

Equivalent isotropically radiated power (EIRP) in the EU is limited to 20 dBm (100 mW).

The current 'fastest' norm, 802.11n, uses double the radio spectrum/bandwidth (40MHz) compared to 802.11a or 802.11g (20MHz). This means there can be only one 802.11n network on the 2.4 GHz band at a given location, without interference to/from other WLAN traffic. 802.11n can also be set to use 20MHz bandwidth only to prevent interference in dense community.

[edit] RangeSee also: Long-range Wi-Fi
Wi-Fi networks have limited range. A typical wireless access point using 802.11b or 802.11g with a stock antenna might have a range of 32 m (120 ft) indoors and 95 m (300 ft) outdoors. IEEE 802.11n, however, can more than double the range.[39] Range also varies with frequency band. Wi-Fi in the 2.4 GHz frequency block has slightly better range than Wi-Fi in the 5 GHz frequency block which is used by 802.11a and optionally by 802.11n. On wireless routers with detachable antennas, it is possible to improve range by fitting upgraded antennas which have higher gain in particular directions. Outdoor ranges can be improved to many kilometers through the use of high gain directional antennas at the router and remote device(s). In general, the maximum amount of power that a Wi-Fi device can transmit is limited by local regulations, such as FCC Part 15 in the US.

Due to reach requirements for wireless LAN applications, Wi-Fi has fairly high power consumption compared to some other standards. Technologies such as Bluetooth (designed to support wireless PAN applications) provide a much shorter propagation range of

Similar Documents

Free Essay


...Todos sabemos que el calor altera las propiedades de los elementos y expande los materiales, también sabemos que el frio contrae los elementos, es decir tanto cargar y descargar la pila va alterando su composición física entonces al poner frio y contraer los elementos de alguna forma vuelve casi a la normalidad, si a esto sumamos que el frio produce hidrogeno, las pilas de litio se recuperan milagrosamente.  Hecho esto la bateria recuperara Gran Parte de su Capacidad. Si no sabéis si os merece la pena hacerlo aqui traigo resultados: < < < RESULTADOS > > >  » ANTES (DURACIÓN: 4 - 6 Horas): * WiFi: ON * BlueTooth: OFF * GPS: OFF * Sincronización Automática: OFF * Pantalla: Brillo 25% * Aplicaciones Abiertas: OperaMobile, Tuenti, Twitter, Whatsapp, Viber, ADW Launcher » DESPUÉS (DURACIÓN: 20 Horas) * WiFi: ON * BlueTooth: On * GPS: ON * Sincronizacion Automatica: ON * Pantalla: Bloqueada * Aplicaciones Abiertas: Tuenti, Twitter, Whatsapp, Viber, ADW Launcher, * MÚSICA: Volumen Medio La duración de la batería puede variar en...

Words: 337 - Pages: 2

Free Essay

Instrucciones Gigaset Hd600T

...Índice Por su seguridad Instrucciones de seguridad 2 2 El Gigaset HD600 T ¿Qué es TDT? Gigaset HD600 T Funciones del mando a distancia Funciones del panel frontal Conexiones del panel trasero Funciones del panel lateral 4 4 4 6 9 9 10 Instalación del Gigaset HD600 T Preparar la instalación Seleccionar la antena Conectar dispositivos Diagrama de conexiones 11 11 11 12 13 Interfaz del menú Instalación por primera vez Menú de Configuración Menú DTV Menú AV IN (entrada de audio y vídeo) Menú Sincronizador de grabación Menú de navegación Menú copia de archivos Radio por Internet Menú IMS Actualización del firmware Guía electrónica de programación (EPG) de InOut TV 16 16 17 26 28 28 31 38 40 41 41 42 Anexo Especificaciones Preguntas más frecuentes Permiso Derechos de autor y marcas comerciales Garantía Declaración GPL Servicio Técnico (Servicio de Atención al Cliente) Certificado de garantía Condiciones generales de uso del servicio InOut TV 44 44 45 47 48 48 48 49 49 50 Glosario 51 1 Para su seguridad Lea detenidamente las instrucciones de seguridad antes de poner en marcha la unidad. Tenga en cuenta que algunas funciones descritas en estas instrucciones de uso no están disponibles en todas las versiones de software. Instrucciones de seguridad Instrucciones generales de seguridad Tenga a mano estas instrucciones de funcionamiento y entregue la unidad a otras personas solamente con las instrucciones y los accesorios suministrados...

Words: 13390 - Pages: 54

Free Essay


...Wi-Fi ( /ˈwaɪfaɪ/, also spelled Wifi or WiFi) is a popular technology that allows an electronic device to exchange data wirelessly (using radio waves) over a computer network, including high-speed Internet connections. The Wi-Fi Alliance defines Wi-Fi as any "wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers' (IEEE) 802.11 standards".[1] However, since most modern WLANs are based on these standards, the term "Wi-Fi" is used in general English as a synonym for "WLAN". A device that can use Wi-Fi (such as a personal computer, video game console, smartphone, tablet, or digital audio player) can connect to a network resource such as the Internet via a wireless network access point. Such an access point (or hotspot) has a range of about 20 meters (65 feet) indoors and a greater range outdoors. Hotspot coverage can comprise an area as small as a single room with walls that block radio waves or as large as many square miles — this is achieved by using multiple overlapping access points. "Wi-Fi" is a trademark of the Wi-Fi Alliance and the brand name for products using the IEEE 802.11 family of standards. Only Wi-Fi products that complete Wi-Fi Alliance interoperability certification testing successfully may use the "Wi-Fi CERTIFIED" designation and trademark. Wi-Fi has had a checkered security history. Its earliest encryption system, WEP, proved easy to break. Much higher quality protocols, WPA and WPA2, were...

Words: 325 - Pages: 2

Free Essay


...INDOOR POSITION DETECTION USING WIFI AND TRILATERATION TECHNIQUE Nor Aida Mahiddin, Noaizan Safie, Elissa Nadia, Suhailan Safei, Engku Fadzli. Faculty of Informatics, University Sultan ZainalAbidin, Gong Badak Campus, Terengganu, Malaysia {aidamahiddin, aizan, elissa, suhailan, fadzlihasan} ABSTRACT Various techniques that employ GPS signals such as A-GPS and GPS transmitters [4, 7] have been introduced with the hope to provide a solution for indoor positioning detection. We proposed the implementation of trilateration technique to determine the position of users in indoor areas based on Wi-Fi signal strengths from access points (AP) within the indoor vicinity. In this paper, percentage of signal strengths obtained from Wi-Fi analyzer in a smartphone were converted into distance between users and each AP. A user’s indoor position could then be determined using a formula proposed based on trilateration technique. KEYWORDS Indoor Position detection, WI-Fi, Trilateration Technique. 1 INTRODUCTION Global Positioning System (GPS) is a technology developed by United States of Defense (DoD) that has been used for military purposed. It is also the main technology that plays an important role in satellite navigation. The main purpose of GPS is to determine the position or coordinate of an object based on location, time and speed [2, 6] which provide Location Based Services (LBS) [5, 6]. Nowadays, the technology has been used ...

Words: 2199 - Pages: 9

Free Essay


...Wi-Fi is changing how we interact with computers. We are no longer tied to our desks with cables and are able to access information anywhere and anytime. Wi-Fi is a type of wireless network technology used for connecting to the Internet. The frequencies Wi-Fi works at are 2.3 GHz or 5 GHz, allowing them to deliver higher data than radio waves used by cell phones. Wi-Fi is basically just radio waves broadcast from a Wi-Fi router, a device detecting and deciphering the waves, and then sending back data to router. It works very similar to an AM/ FM radio but it is two-way communication channel. The "City That Never Sleeps” has brought free Wi-Fi Internet access in public spaces including 16 parks and tourist attractions such as Times Square and the Battery Park ferry terminal. Free Wi-Fi connectivity, available in Bryant Park and Union Square, is powered via AT&T and NYC partner organization NYCwireless. Transit Wireless, the organization tasked with outfitting the New York City's 110-year-old subway system with wireless infrastructure, aims to provide free Wi-Fi at all of New York City's 277 underground subway station by 2016. By late 2015, New York City is going to replace ageing payphones with the LinkNYC, by the company CityBridge, a designer of a device network that will give all five NYC boroughs free wireless Internet service of one gigabit per second within a radius of 150 feet. These boots will give New Yorkers 24/7 free Internet with up to gigabit speeds, free phone...

Words: 330 - Pages: 2

Free Essay


...WIRELESS BROADBAND NETWORKS - Technical Implementation Guide AMD WHITEPAPER Version 1, Release 0.2 18th May 2004 For more information, see and contact us at: Email: / Fax: +1-9177209888 i This page is intentionally left blank. ii For more information, see and contact us at: Email: / Fax: +1-9177209888 TABLE OF CONTENTS Page 1. INTRODUCTION ................................................................................................................... 1 1.1 Background .................................................................................................................... 1 1.2 About AMD .................................................................................................................... 1 TECHNOLOGY OVERVIEW ................................................................................................ 2 2.1 Proprietary versus Standards-Based Solutions ............................................................... 3 2.2 Scalability and Interoperability ...................................................................................... 3 2.3 Radio Frequency (RF) .................................................................................................... 4 2.4 Attenuation and Interference .......................................................................................... 5 2.5 Transmitters, Receivers, and Transceivers ..........................................

Words: 7785 - Pages: 32

Premium Essay

It Wifi

...ABSTRACT There are many trends in our IT industry. Here we are going to discuss about the emerging technology in IT (i.e.) Wi-Fi technology. Wi-Fi (wireless fidelity) is a way to connect to the internet without any wires or cumbersome cables. Wi-Fi technology uses a radio technology called 802.11 b for the wireless connectivity. 802.11 buses 2.4GHz of band frequency spectrum with a bandwidth of 11Mbps(802.11a-5GHz,54Mbps & 802.l1g-2,4GHz,54Mbps).In this paper we have discussed in detail about what Wi-Fi is and How does it work, what the hotspots are and how does the Wi-Fi technology has been implemented in these hotspots. The Wi-Fi technology finds its great utility in the device called Infinity Tele Smart patient-worn technology system, a full size patient monitor system, in the palm TX handheld device and also in many other medical types of equipment. It is also playing a major role in the Robotics. Though there exits many other wireless technologies such Bluetooth, Wi-Fi competes them with its high data transfer rate and the transmission of the data over a large distance. Though Wi-Fi is a very advantageous and a powerful technology, it is also posed to some defects during the transmission of the data. To say like, interference with the household devices like microwaves and it's also possible for hackers to use your access point to connect to the Internet. To overcome the above mentioned discrepancies, we have also discussed about the security measures...

Words: 267 - Pages: 2

Free Essay


...Report Writing Guide Lines 1. Abstract —we cannot accommodate boldface, headings, or bullets within the abstract. You must either remove this formatting and incorporate the text into the abstract or move the content to the body of the text. If small caps are used for a definition in the Abstract, small caps must be used again (once ‐ for the same definition) within the body of text. 2. Table of Contents: The table of contents should not be numbered and the contents must start from page number 1. Any page(s) before table of contents should be numbered in Roman. The page numbers should match correctly to the actual contents in the final version of the report. Heading up to third level may be included in the table of contents. 3. List of Figures: All the figures used in report are mentioned here according to their page numbers 4. List of Tables: All the tables used in report are mentioned here according to their page numbers 5. List of acronyms: All the abbreviations and acronyms used in the report are listed here. 6. Introduction: 7. Research work: 8. Conclusion: 9. References: In‐Text Citations References to other sources should be numbered sequentially by order of mention in the text, with the number placed in brackets and the end of the sentence and printed on line (not as a superscript) like [1]. In‐text citations should appear at end of the clause/sentence. Multiple in‐text citations should appear as...

Words: 1637 - Pages: 7

Free Essay


...Wi-Fi Alliance certification is constantly evolving to ensure that Wi-Fi CERTIFIED products include the latest enhancements to the IEEE 802.11 standard and to support a growing set of applications and devices. As a result, Wi-Fi functionality is extended and its performance improved, while retaining backward compatibility with legacy Wi-Fi CERTIFIED products. The work of the IEEE 802.11 working group in areas that include enhancements in performance, security and roaming will keep Wi-Fi technology steadily improving. Among the most anticipated enhancements is IEEE 802.11n which will bring increases in throughput enabled by MAC and PHY technology innovations. Wi-Fi users have grown accustomed to the basic data functionality that Wi-Fi affords them. They have started to use Wi-Fi in new applications and devices and expect to have the same satisfactory experience as with their laptops. These new applications and devices, and the end user expectation of Wi-Fi in them, are the main drivers for the development of new Wi-Fi Alliance certification programs. Most emerging applications have a real-time component that translates into more stringent performance and conformance requirements. This has created a gradual shift towards an increased emphasis on these test areas in Wi-Fi Alliance certification and in the development of specific new programs designed to improve performance so that Wi-Fi CERTIFIED products can support these new applications. Wi-Fi...

Words: 319 - Pages: 2

Premium Essay


...Wireless Network Connections Bluetooth and Wi-Fi [pic][pic] Introduction There are multiple versions of a Bluetooth and not all Bluetooth specifications are the same. So you might want to make sure your two chosen devices will work with each other. All of the newer Bluetooth versions are backward-compatible, however, so as long as you’re using the more basic Bluetooth features, you won’t have much to worry about. Fewer products currently worked on Bluetooth 1.1 or 1.2, which offers such basic features as voice dialing, call mute, and last-number redial. In today’s world bluetooths main function are for music, printing, input and transfer. • Music-with Bluetooth wireless technology you can listen to music from your music player, mobile phone or computer using speakers, headphones, home stereos and many other devices. • Printing-with Bluetooth wireless technology you can also print your favorite pictures wirelessly directly from your Bluetooth enabled phone or PC. • Input-Bluetooth technology allows you to control your PC, laptop and more without the hassle of cords. • Transfer-easily transfer photos, music, and other information between your mobile phone and your PC or laptop using Bluetooth wireless technology. bluetooth versions • 1.1 Ratified as IEEE Standard in 2002 which allowed it to add the possibility of non-encrypted channels • 1.2 Faster connection and discovery with adaptive frequency-hopping...

Words: 750 - Pages: 3

Premium Essay

Future of Wifi

...Technology Overview New mobile computing devices are flooding the market with a dramatic demand for access to the internet. With Wireless Fidelity, or Wi-Fi, exploding in popularity, companies and even some whole localities are increasingly providing access to the public. Due to its popularity, varieties of businesses are exploring their options to stay relevant and attract customers. Airports, train stations, grocery stores and other public locations are offering free Wi-Fi in hopes to lure the consumer to purchase their products. Free public Wi-Fi facilitates a lengthier customer relationship and offers a competitive advantage against other local coffee shops offering the same consumables. The accessibility that retail companies have offered to their customers allows for easy and convenient access to the internet. Background Information Wi-Fi is radio-wave technology known as IEEE 802.11b. Wi-Fi has an inexpensive installation and runs with speeds up to 11Mbps. An existing local area network, LAN, needs to exist to install wireless access points. The advantages are the mobility it allows, ability for multiple devices to quickly access with or without authenticating, higher speeds than wired access, and installation costs. The disadvantages include the need for multiple wireless access points to increase signal strength in large areas, narrow area of space that the wireless signal reaches, connection hiccups and the weak security points of having a public network. There...

Words: 1788 - Pages: 8

Free Essay

Wifi Encryption

...Term Paper Christopher Talbott American Public University System Wireless Networks and their Security Risks This purpose of this paper is to discuss the current state of Wireless networks. Their different security features and known issues with wireless technology. As well as how business implement Wireless networks, the different hacking methods used against Wireless networks and its future technological uses. There are many different wireless standards ranging from 802.11b to the new 802.11ac standard. Many manufactures exist with their own unique features for both home and business use. Each Wireless network standard was set forth an agreed upon by the IEEE or Institute of Electrical and Electronics Engineers. “IEEE is the world's largest professional association dedicated to advancing technological innovation and excellence for the benefit of humanity. IEEE and its members inspire a global community through IEEE's highly cited publications, conferences, technology standards, and professional and educational activities, ("About IEEE," 2014)”. The IEEE sets forth the standards for each 802.11 standard, starting with 802.11b, which is a “Wireless radio-frequency local area network. 802.11b, adopted Sept. 1999, operates at 11 Mbps in 2.4GHz band. By end of 2000, IEEE to approve backward-compatible 22 Mbps version of 802.11b HR, to be dubbed 802.11b HRb, (Palenchar, J. (2000)”. 802.11b was the first widely adopted Wireless network for home use. Routers and wireless cards...

Words: 1929 - Pages: 8

Premium Essay

Wifi and Mobile Tech

...Case Study 2: Wireless and Mobile Technology By Terry Boone Dr. Stevens CIS 500: Information Systems for Decision Making 5/24/2014 Wireless and mobile technologies have transformed our daily lives, and also made a huge impact on the business world. The definition of the terms wireless and mobile technologies are often used interchangeably; however, this is not the case. Wireless technology is the ability to communicate on the internet via devices without a wire. Mobile technology is the ability to communicate on the internet via wireless and over a wired connection. Mobile technology allow for a user to access the internet anywhere at any time; conversely, wireless technology is only limited to the broadcast area emanating from the router and modem combination. Businesses use wireless and mobile technologies to increase efficiency by saving money on installation costs freeing up funding to be used elsewhere. Businesses can use wireless technology to connect employees throughout building, but still be connected to important software that runs the businesses operations through portable devices. Cell phones, laptops, and tablets in conjunction with wireless technologies have created the possibility for employees to become more powerful. Smaller organizations must maximize the efficiency of workers, so they can compete. Small organizations must ensure that employees are always connected, in addition to not being tied down to a single location (Koose, n.d.). Smart phones...

Words: 1500 - Pages: 6

Premium Essay

Thermostats with Wifi

...The Benefits of Wi-Fi Thermostats for your home or business Carlos Serrano May 3, 2012 COC 100 Computer Concepts April 2012 Dirusso This paper is submitted in partial fulfillment of the Associates of Science Degree at Southern Technical College. Thesis Statement: How technology is used in the field of HVAC. The primary focus shall be placed on thermostats with Wi-Fi. Wi-Fi Capability has endless possibilities. Now you can buy a Wi-Fi thermostat, which will allow you to control your thermostat settings remotely, from a computer or even your iPhone. Your Wi-Fi Thermostat can be controlled from our iPhone app from anywhere in the world. For remote access, as with browser access, you will need a router that offers port forwarding facility. A fixed IP address from your ISP is required. I imagine some people would utilize this technology to hang out in bed in the morning before turning up the heat with their phone, but these devices are really handy for the frequent traveler, landlord, or anyone who owns a vacation home. While a programmable thermostat has already made many people's lives easier and cheaper, a thermostat with wireless capabilities takes things to a whole new level. Now, while a Wi-Fi thermostat is cool and affordable for many, it is still a relatively new technology. Heating and cooling your house is expensive. But you can usually reduce your bills by installing a programmable thermostat. This allows you to reduce...

Words: 769 - Pages: 4

Free Essay

Marriott Wifi Lawsuit

...Eric W. Branch Assign 1 Argument EN1420 I recently read an article by Nancy Trejos in USA Today about an argument over whether or not access to the internet is considered community property. On October 3, 2014 Marriott International agreed to pay a fine of $600,000 as well as adhere to a three year Compliance Plan for illegally interfering and disabling Wi-Fi networks established by it’s customers. In addition to the fine and Compliance agreement, Marriott will also file progress reports to the FCC every three months. The investigation began after a March 2013 complaint from an individual attending a convention at the Marriott Opryland Hotel stating that the hotel was “jamming mobile hotspots so that you can’t use them in the convention space.” Marriott officials stated that they believed that having their employees block Wi-Fi signals and then charging customers to use the hotels plan at a cost of sometimes up to $1,000 was legal in their eyes. According to the official FCC news release this was in direct violation of Section 333 of the Federal Communications Act. Marriott argued that they did this in the best interest of their customers. A company statement from Marriott argued that “Marriott has a strong interest in ensuring that when our guests use our Wi-Fi service, they will be protected from rogue wireless hotspots that can cause degraded service, insidious cyber-attacks and identity theft. Like many other institutions and companies...

Words: 391 - Pages: 2