My friend just sent this to me after seeing it at a Whole Foods in California:

With how easy it already is to tap a card, why would anybody sign up to use this for payment? It’s mind boggling to me.

Screw just your finger prints, Amazon already has access to that database thanks to the 5-0, so they now want to know every line on your hand! Best at least give people palm readings after the sign up! /s