RFID (Radio Frequency Identification) Jonathan Green, Kevin Thornberg, Erica Jennings May 16, 2007.
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RFID (Radio Frequency Identification) Jonathan Green, Kevin Thornberg, Erica Jennings May 16, 2007
RFID - Agenda History Types Applications (Current & Potential) Ethical Issues
What is RFID? Wireless identification method, relying on storing and remotely retrieving data using devices called RFID tags or transponders.
History of RFID RFID technology has been traced back to as early as the 1920s The first US patent for this technology was made by Mario Cardullo in 1973, the first true ancestor of modern RFID
Types of RFID Two Types Active: Have their own internal power source which is used to power any Integrated Circuits that generate the outgoing signal. Passive: Have no internal power supply, and must be powered externally.
RFID: Active, How it Works Diagram Source Diagram Source
RFID: Active Advantages More reliable Higher power levels More effective in RF challenged environment (metal, water, longer distances) Example: United States Department of Defense – Reduce logistics cost, improve supply chain visibility.
RFID: Active, Disadvantages The tag cannot function without battery power, which limits the lifetime of the tag. The tag is typically more expensive, often costing $20 or more each The long-term maintenance costs for an active RFID tag can be greater than those of a passive tag if the batteries are replaced. Battery outages in an active tag can result in expensive misreads.
RFID: Passive, How it Works Diagram Source Diagram Source
RFID: Passive, Advantages The tag functions without a battery; these tags have a useful life of twenty years or more. The tag is typically much less expensive to manufacture The tag is much smaller (some tags are the size of a grain of rice). These tags have almost unlimited applications in consumer goods and other areas.
RFID: Passive, Disadvantages The tag can be read only at very short distances, typically a few feet at most. It may not be possible to include sensors that can use electricity for power. The tag remains readable for a very long time, even after the product to which the tag is attached has been sold and is no longer being tracked.
Common Applications http://youtube.com/watch?v=llnUJkH0Mlc http://youtube.com/watch?v=llnUJkH0Mlc
Common Applications Passports Transport (toll) payment Product tracking Animal ID
Common Applications Automotive Inventory systems Human implants Library
Current Business Example Benetton Microchip transmitters have been attached to pieces of clothing in Benetton stores -- a technological leap the Italian retailer said will help it track apparel from factory to sales floor to cash register http://www.sfgate.com/cgi- bin/article.cgi?file=/chronicle/archive/2003/03/12/BU161909.DTL&type=business http://www.sfgate.com/cgi- bin/article.cgi?file=/chronicle/archive/2003/03/12/BU161909.DTL&type=business
What do you Think? What are potential applications?