Also called an "RFID interrogator." The maximum distance between the reader's antenna and the tag vary, depending on application. Credit cards and ID badges have to be brought fairly close to the ...

It doesn’t need a battery to capture key codes, just the magnetic field generated by an RFID reader. You can see the functionality demonstrated in the video after the break. By holding the ...

If you’ve worked with passive RFID before, you know that most readers only work within inches of the card. In [Fran’s] DEFCON talk this summer he calls it the “ass-grabbing method” of ...

The waves reach the tag's antenna and power the chip, which then sends its data to the reader in a process called "backscatter." Average cost for these is about $0.12 per tag in bulk. Active RFID ...