Amazon will soon let you pay for groceries with your palm at any Whole Foods—but tech experts urge caution
In the near future, you'll be able to purchase things with a swipe of your hand.

Pay-by-palm is already available at over 200 Amazon-owned Whole Foods Market stores across the country. And by year-end, all 500+ stores throughout the U.S. will offer the payment option, according to a July 20 press release.

This means customers who sign up for the Amazon One program won't need their wallets or phones to pay for groceries.

Amazon One is a type of biometric-based form of payment which uses your unique physical features, such as your face or palm print, to authorize payments.

Here's how it generally works: You sign up for a biometric payment program, such as Amazon One, by providing your credit or debit card information and other details like your phone number or a valid ID, depending on the retailer. Then, you scan your hand, face or fingerprints, which are attached to your user profile. From there, you can use your hand, face or fingerprints to pay at certain participating locations.

However, some tech and cybersecurity experts are expressing concern about this evolving technology.