Banks have been quietly rolling out biometrics to identify customers — verifying them by their fingerprint, voice or eye scan — and retailers like Amazon are getting into the game.
Why it matters: These companies are amassing giant databases of our most personal information — including our gait, how we hold our cellphones, our typing patterns — that raise knotty questions about data security and privacy.
Driving the news: Amazon wants consumers to be able to pay for items in physical stores by waving their palm in front of a payment terminal, the WSJ reports.
The system would link your palm image to a payment card.
Amazon "plans to pitch the terminals to coffee shops, fast-food restaurants and other merchants that do lots of repeat business with their customers," the Journal reports.
Palm biometrics haven't been used for payments on a big scale, but fingerprints have: Apple Pay and the Apple credit card involve pay-by-touch with a cellphone.
Voice ID is also prevalent, particularly in bank call centers.
MORE Biometrics invade banking and retail - Axios