Why does Amazon want to scan your palm at the doctor’s office?

Amazon One palm scanners are in use at hundreds of locations in the United States, including NYU Langone Health hospitals and clinics. | Vox/Getty Images

An Amazon-branded palm scanner greeted me at my last doctor’s office visit a few weeks ago. I’m not sure what I’d call the experience. Unnerving? Orwellian? 

Amazon One is a relatively new service from Amazon that lets businesses verify your identity after you wave your hand over a sensor. The technology first rolled out in the short-lived...