Authenticating voice transactions with payment card

Abstract

Disclosed are a system and techniques for authenticating voice transactions with a payment card. A system example may include a purchase application executing on a smart digital device, and a payment card. The purchase application may receive an item purchase request via an audio input device of the smart digital device for an item available to purchase. The received item purchase request may be sent to an application server or the like, and, in response, a list of merchants offering the item available for purchase and each merchant's price for the item available to purchase may be received. The list may be presented on a smart digital device display for selection of at least one of the merchants selling the item may be received. A payment card may be inserted into the smart digital device's near-field communication field to provide a signal containing encrypted data.