RFID Fundamentals

I realized I didn’t have any good notes on Radio Frequency Identification (RFID) tags/badges/etc, so I figured it was time to compile that and update it while I’m at it.  This post is just a quick run-down of the frequencies, types, and common cards/IDs.  If you don’t know what an RFID is, for the purposes of most pentesting it’s a security badge or a key fob, like you can see in the image at the top of this posting.

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