5 ms·
Seems like in the building seurity case, that could be a huge afffordable improvement over RFID tags; I.e. Tap and get a key that you respond to wth a crypto fu
by dccoolgai 14y ago
Seems like in the building seurity case, that could be a huge afffordable improvement over RFID tags; I.e. Tap and get a key that you respond to wth a crypto function vs. RFID where any idiot can scan and replicate your tag.
- alexchamberlain 14y agoNot sure you can copy all RFID tags; NFC is often classed as a type of RFID.
- adestefan 14y agoNFC is a subset of RFID.
- iloveponies 14y agoActually, it's the other way around. NFC is a superset of many different types of RFID standards that operate all under 13.56MHz - FeliCa, MiFARE, Topaz, ISO14443 etc in addition to include different communication protocols (SNEP for example) as well as payload standards (NDEF).
- deleted 14y ago[deleted]
- jevinskie 14y agoNobody uses that sort of "dumb tag" RFID for building access purposes. For instance, the HID access cards use a challenge/response authentication with nonces. [0] [0]: http://static.usenix.org/event/woot11/tech/final_files/Garcia.pdf http://static.usenix.org/event/woot11/tech/final_files/Garci...
- dccoolgai 14y agoThanks for sharing that. Wouldn't it still be cheaper to implement with software (and potentially more flexible) than with an integrated circuit?
- alexchamberlain 14y agoHow? It's a challenge/response protocol with the processing on the NFC chip/card/object.