Wear an NFC ring on your finger.

Unlike your palmprint, you can get a new ring with a new private key if yours is compromised.

It all boils down to the tradeoff between convenience and security. I don't think it is particularly easy to replicate a living hand with all the blood vessels. And it is not particularly easy to get a NFC ring with a secure element compatible with payment terminals.

I thought that the engineering team at Amazon did a great job with Amazon One. I wish someone could pick up the tech and carry on.

	▲	octoberfranklin 2 hours ago \| parent [-]
		Yeah 25 years ago people said stuff like that about fingerprint scanners, and then they got hacked by literal gummy bears: https://www.theregister.com/2002/05/16/gummi_bears_defeat_fi... For 2020's-era palm scanners you don't have to replicate a 3D hand -- just like a video chat doesn't replicate my 3D face. You just have to emit photons (some of them infrared, yes) in the correct pattern. The hack won't look like a 3D-printed hand, it'll look like a display panel that works beyond visible wavelengths. It'll probably be some device developed for a totally unrelated market, and then one day "whoops, all those palm scanners are 0wn3d" (natürlich auf Deutsch) will be a talk title at CCC. But all this is academic. The real problem with biometrics is that when your password is a body part, you can't change your password.