RFIMatch: Distributed Batteryless Near-Field Identification Using RFID-Tagged Magnet-Biased Reed ...
summary
Modifies UHF RFID tags by wiring a magnet-biased Reed switch + magnet so two passive tags mutually cancel fields and simultaneously switch off, producing a correlated state-change ID; prototype uses a 15 mm gap (D_on) and shows repeatable D_on/D_off with about ~1 mm variance across measurements. Adds a fingertip Fingerstall with native magnetic repulsion haptic feedback and optional LED harvesting. Normally-on and normally-off layouts trade ease of use for scalability; system sustains thousands of tags by avoiding idle tag chatter, though read rate drops from 25→6 reads/s as tags rise 50→200.
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chapters (9)
- 0:00Introduction to RFIMatch
- 1:57Motivation for batteryless readers
- 4:54Magnet-Biased Reed Switch mechanism
- 8:31Module design and haptic feedback
- 9:55Smart Showroom demo
- 11:02Performance evaluation results
- 13:54Future work and scalability
- 16:02Limitations and conclusion
- 16:42Q&A session
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