Mark Logan ordered lunch at Mildreds Coffeehouse & Bistro in the Crossroads Arts District and stepped to the register to pay.

No cash. No check. No plastic.

Logan paid with his smartphone. He had previously loaded it with his debit card information, using an app called Square Wallet, and snapped his own picture.

To make the payment, Square Wallet sent Logans picture to the iPad that Mildreds uses for a register. The iPad tied his tab to his photo.

Keep reading…