By Cecilia Kang
Source: The New York Times

“Would you like to sign in with your palm?”

That was the question a cheerful Amazon employee posed when greeting me last week at the opening of a Whole Foods Market in Washington’s Glover Park neighborhood. She blithely added, “You can also begin shopping by scanning the QR code in your Amazon app.”

“Let’s go for the palm,” I said.

In less than a minute, I scanned both hands on a kiosk and linked them to my Amazon account. Then I hovered my right palm over the turnstile reader to enter the nation’s most technologically sophisticated grocery store.

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