radio frequency identification so what? what is rfid type of technology that uses electromagnetic...
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Radio Frequency Identification
So What?
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What is RFID
• Type of technology that uses electromagnetic radio frequency to identify objects, animals and humans
• Transponders and Readers
• Replacement of barcodes
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Types of RFID tags
Type of Tag
Power source
Range Description
Passive Rely on radio signal that was transmitted to them
10 cm – a few meters
Can only reflect signals back
Semi Passive
Internal battery
10-100 meters
Power source activates chip, does not emit signal
Active Internal battery
Hundreds of meters
Generate powerful responses – reliable and effective
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It goes way back…
• WWII – U.S., British, Germans, Japanese using plane radar
• 1970’s Los Alamos Nat’l Laboratory – tracking nuclear material
• 1950’s – electronic article surveillance tags
• 1980’s – use of RFID for bridge tolls
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Progress of RFID
• Auto-ID center 1999• Track items through
supply chain• Sarma and Brock create
network to link objects to internet
• 2003-100 companies supporting Auto-ID
• EPC used by retailers to track goods
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Wal-Mart meets RFID
• Use RFID to count inventory and detect when they are out of stock
• Only 3 % of suppliers use RFID
• Take small steps – slowly implement system.
• Use RFID to support promotions
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U.S. DoD uses RFID
• As of January 1, 2007 all cases and pallets must have RFID tags
• Tacking weapons and supplies shipped overseas
• Only passive tags used when in foreign countries so enemies can’t read the tags
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Healthcare wants RFID
• Anti-Counterfeiting – history of medicines available at all times
• RFID on patients to give information about medical history.
• Error prevention – prevents wrong procedure from happening
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Other Uses
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The Concerns…
• Possibility of being tracked through our belongings
• Knowing where people are at all times.
• Using RFID to find and steal goods
• Information available to anyone with an RFID reader
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References
• http://en.wikipedia.org/wiki/RFID• http://www.news.com/2010-1069-980325.html• http://www.rfidjournal.com/article/view/1338/1/129• http://www.idtechex.com/products/en/articles/
00000470.asp• http://www.informationweek.com/news/
showArticle.jhtml?articleID=198700170
• http://www.rfidjournal.com/article/articleview/1080/1/1/