Omar Rizwan
.
@omar,
thinking of 'transmission over QR code on your phone screen' as an alternative to both wires and wireless. clearer mental model (of what's connected to what) than wireless + no need for physical wires or plugging into a port on your phone
Omar Rizwan
.
@omar,
Disney rides do this, where you pull up the code on your phone screen and then put your phone into this Dune mouth thing (which presumably contains a camera pointed down at your phone screen) and swipe your pass into the machine, and it vibrates in a satisfying way as you swipe