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Radio frequency identification technology (RFID) Dominic Payne Janna Thomson Kevin Mackay
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Definition A method of identifying unique items using radio waves. Typically, a reader communicates with a transponder, which holds digital information in a microchip. There are chipless forms of RFID tags that use material to reflect back a portion of the radio waves beamed at them
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History Discovered in 1935 by Scottish physicist Sir Robert Alexander Watson-Watt First passive RFID used in WW2 Used to track nuclear materials in 70’s Developed a low-frequency (125 kHz) system, featuring smaller transponders Moved up the spectrum to 13.56MHz offering greater range an quicker data transfer rates David Brock and Sanjay Sarma, put low-cost RFID tags on all products used as a tracking device Wal-Mart requires all of its suppliers to put RFID tags carrying Electronic Product Codes on pallets and cases Used today in car starters, payment control, smart cars etc.
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Features -Gives each product their own unique identifying number -Transfer information from a device to a reader through radio frequency waves 3 Major components: 1) RFID Tag 2)RFID Reader 3)Non-physical pre-defined protocol 2 Primary RFID systems: 1)Passive 2)Active
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Function Inventory Management and Asset Tracking -Manufacturing -Supply chain -Managment -Retailing -Payment systems -Security And Access -Control
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Benefits Small in size Some have no power source Not required that the RFID tag is shown Can be read hundreds of times Allows companies to eliminate roles
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Disadvantages Short range for the Passive RFID Do not carry intrinsic information Sensitive to other radio interferences Can be costly
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Summary Small accurate tracking device Unique Quick transfer of data Inexpensive future
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Questions?
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