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Potential Applications of RFID Technology in Medicine
Paul Fontelo, Fang Liu, Michael Ackerman
High Performance Computing and Communications
National Library of Medicine
Bethesda, Maryland 20894
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What is RFID?
• RFID = Radio-frequency identification • identification method using RFID tags
or transponders• RFID tag contains data read remotely • device attached or incorporated on a
product, animal, or person • Tags read using radio waves (‘swipe’
‘no touch’ vs ‘touch’)
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RFID tags
Sources: Chase, Verichip, http://www.amal.net/rfid.html, E-Zpass, FasTrak, ASTAR, IME
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RFID tags
Active Passive
+ - + -Long range Bigger, heavier Light, small Short range
Read/write with memory
$$ $, ¢ $$$$ reader,
freq recharge
Can connect to sensors (on/off)
Battery 0.5 - 5 years
3 - 10 years Read only
Heavier Simple label, printed special ink
Inactive, needs proximity
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Barcode RFID
Scanning? Yes, line of sight No
Unique ID? No (product type) Yes (identify specific item)
Tracking? No Yes
Cost? Cheaper More
Practicality? Pallet/case Item level
Security? Unique ID May be duplicated
Reliability? Long history of use Early adoption
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Effect of Shielding
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RFID Issues
• Security is the biggest concern– May be read by anyone– Activation range can be extended– ‘Cloning’ - data can be copied
• Privacy issues– Used for tracking– Identity of carrier may be known
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Conclusion
• RFID is a tool with medical applications
• Plus - no ‘line of sight’ requirement, convenient
• Negative - security, privacy, cost
• Combination of technologies (barcode, RFID) and security/privacy solutions (encryption, shielding)
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Paul Fontelo, MD, MPHHigh Performance Computing and
CommunicationsNational Library of Medicine