Radio-frequency identification
hideRadio-frequency identification (RFID) is the use of an object (typically referred to as an RFID tag) applied to or incorporated into a product, animal, or person for the purpose of identification and tracking using radio waves. Some tags can be read from several meters away and beyond the line of sight of the reader.
Most RFID tags contain at least two parts. One is an integrated circuit for storing and processing information, modulating and demodulating a radio-frequency (RF) signal, and other specialized functions. The second is an antenna for receiving and transmitting the signal.
There are generally three types of RFID tags: active RFID tags, which contain a battery and can transmit signals autonomously, passive RFID tags, which have no battery and require an external source to provoke signal transmission and battery assisted passive (BAP) which require an external source to wake up but have significant higher forward link capability providing great read range.
Today, RFID is used in enterprise supply chain management to improve the efficiency of inventory tracking and management.
For more information about Radio-frequency identification, read the full article at
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News tagged with radio frequency identification
Intelligence inside metal components
Nov 24, 2009 |
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Up to now, extreme production temperatures made it impossible to equip metallic components with RFID chips during the operating process. At Euromold in Frankfurt (Dec. 2-5), Germany, Fraunhofer researchers ...
Building the smart home wirelessly
Nov 19, 2009 |
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Like the paperless office, the smart home has been a long time coming, but a report published in the International Journal of Internet Protocol Technology, suggests that radio tags coupled with mobile communications device ...
'Fingerprinting' RFID Tags: Researchers Develop Anti-Counterfeiting Technology
Nov 19, 2009 |
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(PhysOrg.com) -- Engineering researchers at the University of Arkansas have developed a unique and robust method to prevent cloning of passive radio frequency identification tags. The technology, based on one or more unique ...
Xerox Develops Silver Ink for Cheap Printable Electronics
Oct 27, 2009 |
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(PhysOrg.com) -- Xerox has developed an ink which can be used to print circuits onto plastics, films, and textiles. Although circuits printed on flexible materials aren't new, Xerox's method may be cheap and ...
GTRI is developing protocols for testing effects of RFID systems on medical devices
Oct 06, 2009 |
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Radio frequency identification (RFID) systems are widely used for applications that include inventory management, package tracking, toll collection, passport identification and airport luggage security. More ...
New Study Shows RFID Significantly Improves Item-Level Inventory Accuracy
Aug 27, 2009 |
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(PhysOrg.com) -- A new study on the use of radio-frequency identification tags on individual retail items shows that inventory accuracy decreases or diminishes over time with conventional systems that rely on barcodes and/or ...
'Printed chips' could be boon for consumers
Aug 12, 2009 |
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Until now, creating the microchips that power all of our electronic gadgets has been a laborious, complex and time-consuming process costing billions of dollars. But if a Milpitas, Calif.-based startup succeeds, making them ...
Students develop cane with e-tags to guide blind
Aug 03, 2009 |
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(AP) -- A cane equipped with the technology that retailers use to tag merchandise could help blind people avoid obstacles.
Chips in official IDs raise privacy fears
Jul 11, 2009 |
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Climbing into his Volvo, outfitted with a Matrics antenna and a Motorola reader he'd bought on eBay for $190, Chris Paget cruised the streets of San Francisco with this objective: To read the identity cards ...
Bridging the gap between wireless sensor networks and the scientists who use them
Apr 06, 2009 |
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(PhysOrg.com) -- A new, simpler programming language for wireless sensor networks is designed for easy use by geologists who might use them to monitor volcanoes and biologists who rely on them to understand birds' nesting ...
New RFID technology tracks and monitors nuclear materials
Mar 24, 2009 |
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(PhysOrg.com) -- Radio frequency identification (RFID) devices have widely been used for tracking for years; recently, scientists from U.S. Department of Energy's Argonne National Laboratory have developed ...
Signal opportunities on the slopes -- with RFID
Mar 03, 2009 |
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(PhysOrg.com) -- Whether slalom or alpine skiing, competitive skiing is all about thousandths of a second. Hence, professional athletes must constantly refine their technique. Small radio transmitters will ...
