Vending machines, like soda and snacks, should integrate lightning payments. It would be so cool if you could stop at a vending machine, and whip your phone out to make an instant lightning payment for a can of Coke. It could have a little screen that displays a QR code after you make your selection. You just scan the QR with your lightning wallet app, and pay the invoice. The machine then vends your selection upon notice that the invoice has been paid.

The whole process should be as fast or faster than the current NFC Apple Pay, or Samsung Pay, or Android Pay functionality that most vending machines already have. The technology to make this happen already exists. It's just a matter of vending machines installing the hardware to display the QR, and creating an admin software that ports the existing internet access, and provides the ability for the machine owner to specify their wallet address to receive the payments each day. I feel like the Breez SDK could help make this happen.