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RFID Tags

RFID Tags. Groups 11/12. What Is RFID . Radio Frequency Identification Dedicated short range communication technology. (DSRC) Uses radio waves to automatically identify objects or people. Similar to the bar code system with one big difference. No line-of-sight reading required.

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RFID Tags

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  1. RFID Tags Groups 11/12

  2. What Is RFID • Radio Frequency Identification • Dedicated short range communication technology. (DSRC) • Uses radio waves to automatically identify objects or people. • Similar to the bar code system with one big difference. • No line-of-sight reading required. • http://www.webopedia.com/DidYouKnow/Computer_Science/2005/rfid.asp

  3. Advantages over Bar Codes • Can be read from several yards away. • Can be read even if it is covered by another object or the object itself. • Read inside case, carton, or box. • Can read hundreds at a time rather than one at a time. • Data can be changed, updated, locked, and tracked. • http://www.webopedia.com/DidYouKnow/Computer_Science/2005/rfid.asp • http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/rfid.htm

  4. How RFID Works • Wireless non contact system • Uses electromagnetic fields to transfer data from a tag attached to an object or person. • The “RF” portion is used to transmit signals • System consists of an antenna and a transceiver (a device that both transmits and receives analog or digital signals). • This transfers the information to a processing device and a transponder, which contains the RF circuitry and information to be transmitted. • Can carry information as simple as a pet owners name and address to something as complicated as instructions on how to assemble a car. • http://www.webopedia.com/DidYouKnow/Computer_Science/2005/rfid.asp

  5. Different Types • Passive Tags • Generally has their data permanently burned into the tag when it is made. • Uses the RF from the reader to transmit their signal. • Read up to 20 feet away. • Example is a bottle of shampoo (made to be disposable) • Semi-Passive • On board battery which gives it the power to transmit their data over a greater distance. • Can read a 100 feet or more away. • Active Tags • Much more sophisticated • Has an on-board battery • Can read 100 feet or more away • Powers RAM to store 32,000 bytes of data. • Example would be an automobile • http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/rfid.htm • http://www.webopedia.com/DidYouKnow/Computer_Science/2005/rfid.asp

  6. Costs • Passive tags • Costs between $0.07 and $0.20 each. • Semi- Passive/ Active tags • More expensive than passive tags. • Typically do not quote a price until range, storage, and quantity has been determined. • http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/rfid.htm

  7. Applications RFID can be used anywhere a unique identification system is needed Tracking of Goods Tracking or people or animals Tolls and contactless payment Inventory Management Identity cards http://www.webopedia.com/DidYouKnow/Computer_Science/2005/rfid.asp

  8. Business and Society Uses • In hospitals RFID is being used to track a patient’s location or even doctors and nurses. • Also to control access to restricted areas of the hospital. • RFID is injected under an animals skin to provide information relevant the animal’s history. • RFID in retail gives the company the opportunity to track their inventories in real time • Also can monitor and control inventory supply. • RFID can be used to track an automobile product throughout the assemble process. • The I-Pass in your car and subway passes are beginning to use RFID. • http://www.webopedia.com/DidYouKnow/Computer_Science/2005/rfid.asp • http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/rfid.htm

  9. Future of RFID Frontrunner in the industry for automatic identification and data collection. The biggest benefit (yet unproven) would be tracking a consumer or business product from the manufacturer to the retail store and then finally to the consumer’s front door. Could replace UPC codes at retail stores, especially grocery stores to cut down on checkout time. http://www.webopedia.com/DidYouKnow/Computer_Science/2005/rfid.asp http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/rfid.htm

  10. Sources http://www.webopedia.com/DidYouKnow/Computer_Science/2005/rfid.asp http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/rfid.htm

  11. Clicker • What does RFID stand for? • Radioactive Friendly Identification Device • Radio Frequency Identification • Really Fast Identity Discoverer • None of the above

  12. Clicker • It will be possible in the future to just simply walk out of a store without having to stand in a checkout line? • True • False

  13. Clicker • Why might a company not want to use RFID tags? • Too expensive • Data differentiation problems • Security concerns • Privacy concerns • All of the above

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