The RFID Zapper
is an electronic device which can permanently deactivate passive RFID
chips. In contrast to other methods (e.g. microwave
radiation, cutting the chip's antenna
) the item to which the chip is attached will not be damaged (unless it is something that suffers damage from electrical fields
). The concept of the RFID Zapper was presented on the Chaos Communication Congress 2005
The existing RFID Zapper prototypes
were built using disposable cameras
with flash. The flash is removed and the flash capacitor
is connected to a coil
. When the capacitor is charged and the circuit closed with a switch, the coil produces a strong electromagnetic pulse. The field induces a current
inside the chip which should be large enough to destroy it.
A shock device for self defense purposes can also be used to deactivate RFID chips, tags or ID cards. For optimum performance, the RFID device should be placed between the electrodes of two shock devices. When the shock devices are turned on for a few seconds, the electronics in the RFID device are destroyed. The shock devices are strong enough to deactivate RFID devices that are laminated or in plastic coverings.