SYSTEMS AND METHODS FOR PERFORMING PAYMENT CARD TRANSACTIONS USING A WEARABLE COMPUTING DEVICE

A computer-based method for authenticating a suspect consumer as an authorized cardholder during a payment card transaction is provided. The method includes registering the authorized cardholder within a portable computer device by receiving a reference sample of the authorized cardholder. The portable computer device includes a processor, a memory, and a camera. The method also includes storing, in the memory, the reference sample of the authorized cardholder and associated payment card information. The method further includes using the camera to capture a transaction sample of the suspect consumer during the payment card transaction using the camera. The method also includes comparing, by the processor, the transaction sample to the reference sample stored in the memory. The method further includes authenticating the suspect consumer as the authorized cardholder based at least in part on the comparison.