In the middle of a pandemic when customers are often wearing plastic gloves to stores alongside their face masks, Amazon’s physical retail team is introducing a new biometric device that will allow shoppers to pay at Amazon Go stores using their palm. The company on Tuesday introduced its purportedly “contactless” Amazon One, a scanner of sorts where you’ll first insert your credit card, then hover your palm over the device to associate your palm signature with your payment mechanism. Once your card is on file, you’ll be able to enter the store in the future just by holding your palm above the Amazon One device for a second or so.

Amazon says the new device uses computer vision technology in real-time to create the unique palm signature — a choice the company made because it believes palm recognition is more private that some other means of biometric authentication. That is, you can’t determine someone’s identity just by looking at the image of their palm, Amazon says. That may be true, but given that the palm signature is associated with a payment card, it’s more important that the data is secured rather than how recognizable the palm image is.