Credit card shimming

 “The thief makes a circuit board the size of a credit card, but approximately .1 mm thick. They use a carrier card to insert the device. Basically it is a reader-transmitter. The reader does what the usual credit card skimmer does: capture full track data. The transmitter does what bluetooth does: transmit the track data to a receiver. The technology is pretty sophisticated and will be hard to catch once it goes into mass production.”