RFID Scan Detector

RFID: Over on Adam Shostack’s weblog, in a comment on an entry regarding the plans to mandate remotely-readable RFID passports, Martin Forssen brings up a great idea:

What I want is a device which beeps every time somebody scans me for RFID-tags. I assume this would be fairly easy to construct since the scanner must send a signal of some strength to activate the chip.

I wonder if that’d work? A keyfob, for example, something similar in size to the dinky Chrysalis Wifi Seeker I have on my keyring, would be perfect. It’d be probably pretty cheap to make, would make a great geek toy, and be quite educational too. ;)

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