Three-track magnetic card reader can be used to swipe and read the magnetic stripe on the back of a credit or debit card or another magnetic stripe card;Configuration of the reader enables cards to be swiped backward or forward at a speed of up to 50 per second;Triple DES (Data Encryption Standard) encryption helps protect transaction data and prevent unauthorized access;Built-in, 6' USB cable can be connected to a computer or host system (sold separately) to transmit card data and power the reader;Weighs 5.8 oz. with USB cable; measures 1.23 x 1.28 x 3.94 x inches (H x W x D)