Hidden Data in NFC Tags
By @edent
· ndef nfc rfid security · 1 comment · 450 words · read ~1,064 times.
I've just got a set of wearable NFC tags, and I've discovered something interesting about the way data is stored on them. tl;dr Overwriting a tag can leave old data intact, and still readable. Here's the decoded memory layout of a tag with data written to it. In this case, a (failed) experiment at storing […]
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