> including a vending machine on campus I've never seen a vending machine require a cell phone. I'm curious about what is the design of it. I've seen some tha

> including a vending machine on campus I've never seen a vending machine require a cell phone. I'm curious about what is the design of it. I've seen some that require tap-to-pay, but that would of course work with a credit card with NFC without any device.