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You just need a technology that only works across spaces no larger than a couple feet.
by istjohn 5y ago
You just need a technology that only works across spaces no larger than a couple feet.
- PeterisP 5y agoThere really aren't common technologies that *only* work across spaces no larger than a couple feet; the technologies that normally are limited to very close range can actually be used at larger distances with proper (large, directional) antennas and more powerful radio hardware.
- hoseja 5y agoNFC stands for Near-field communication.
- randomswede 5y agoYes, but you have to distinguish what it is supposed to do, and what it can actually do. With directional antennas, practical NFC relays have been done, <a href="https://hal.inria.fr/hal-01632735/document">this https://hal.inria.fr/hal-01632735/document">this paper</a> cites distances of up to 100 metres.
- PeterisP 5y agoYes, it's designed for close-range communication, IIRC with proper hardware you can listen into NFC communications from as much 10m / 30feet; and with a relay attack, you can "extend the range" arbitrarily.