It works by piggy-backing on the digital scanners that many big retailers use to accept phone-based payments from their apps and from digital wallets like Apple Pay.
Interesting article about how bitcoin is becoming a mainstream payment method. It was only a matter of time, and now it's here. I'm not sure I'll be using mine to buy groceries, but it does remove a huge knock on crypto. Is this and other recent developments the reason for the recent price move up......?
Read the full story here....
http://fortune.com/2019/05/13/bitcoin-comes-to-whole-foods-major-retailers-in-coup-for-digital-currency/