RFID sniffer

RFID sniffer

About this project

RFID is everywhere. Use the easy to build RFID sniffer to find out if objects are tagged.
The RFID sniffer is a simple analog electronic circuit which can detect the presence of 13.56 MHz RFID tags. These tags are commonly used in all kinds of plastic cards like access badges, bank cards, library cards, loyalty cards and so on. Also many other objects may carry RFID tags without you knowing it. Books, toys, and even clothing might be tagged. Carrying tagged objects with you can reveal your identity or whereabouts to anyone equipped with the appropiate tools to read RFID tags.
The RFID sniffer helps you identify which objects are tagged, and which are not.

RFID cloner

RFID clonerPosted by marc 2008-12-04 10:57
A new idea for a more advanced product: the RFID cloner.
It would have the same form factor as the RFID sniffer, but instead of merely detecting presence, this device can read the unique serial number of a RFID tag, store it at the press of a button, and subsequently imitate a tag using that same id. (which is then not unique anymore!)
Basically it would be a hybrid device, consisting of a RFID reader and a (active) RFID tag, both using the same antenna, and running from a battery. It could also have a USB port for sending the id to a host computer, setting the tag id, and charging the battery.
I wonder if anyone did this before...

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