Global Guerrillas Networked tribes, infrastructure disruption, and the emerging bazaar of violence. An open notebook on the first epochal war of the 21st Century.
By John Robb
http://globalguerrillas.typepad.com/globalguerrillas/2006/01/weapons_the_rfi.html
Wednesday, January 04, 2006 WEAPONS: The RFID zapper
Radio frequency IDs (RFIDs), small electronic chips that share information when scanned, are rapidly becoming an essential part of global supply management. In order to correctly route and track items from inception to purchase, these chips are attached to packaging and increasingly the products themselves.
The intentional disabling of these chips can cause supply chain disruption. The best method is to HERF (high energy radio frequency, usually microwaves) the chips using a small transmitter (read about high power home made microwave weapons for herfing: http://globalguerrillas.typepad.com/globalguerrillas/2004/05/journal_homemad.html ) .
The German branch (privacy activists) of the global guerrilla innovation network has developed a simple solution: https://events.ccc.de/congress/2005/wiki/RFID-Zapper(EN)
that converts a standard film camera into a short range RFID zapper.
This system: "...copies the microwave-oven-method, but in a much smaller scale. It generates a strong electromagnetic field with a coil, which should be placed as near to the target-RFID-Tag as possible. The RFID-Tag then will recive a strong shock of energy comparable with an EMP and some part of it will blow, most likely the capacitator, thus deactivating the chip forever.
To keep the costs of the RFID-Zapper as low as possible, we decided to modify the electric component of a singe-use-camera with flashlight, as can be found almost everywhere. The coil is made from varnished wire and placed inside the camera exactly where the film has been.
Then the coil is soldered between the cameras electronic and its flashlight. Last but not least most single-use-cameras will require some kind of switch to be build into them, since their activating-mechanism usually is to small and primitive. Once the switch is connected and tested, the camera can be closed again and henceforth will serve as a RFID-Zapper, destroying RFID-Tags with the power of ordinary batteries."
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