Electric Imp's Point of Sale Demo
- Approach the vending machine
- Select the desired product on the machine
- Machine asks to present phone
- Open app, click on PAY button
- Barcode is generated, scan it with the scanner in vending machine
- Vending machine requests server to charge this user
- The barcode becomes "claimed" but not yet "verified"
- User is prompted for confirmation ("do you want to pay?")
- Confirmed by user, funds are extracted
- Product is dispensed