Panera Bread Introduces Biometric Payment Option with Amazon One Scanner.

Panera plans to roll out Amazon One, a hand-scanning technology that can access customers' credit card and loyalty account using their palm, in additional locations across the US in the coming months. The biometric-gathering technology, developed by Amazon, has raised privacy concerns among US senators and customers. Panera said that the palm scanner is optional for customers, and the company itself does not store personal palm data. Customers who opt in will also be able to pay by hand-scan. Panera's loyalty program includes about 52 million members.