Mat-O-Id Digital Wallet app for Android description
You and your colleagues have a cash register for beverages in office or club?
Tired of paying with coins? Why don't use cheap RFID-Tags?
All you need is a cheap tablet that can do USB-OTG, a card-reader and some tokens.
Looks good on tablets bigger or equal 7.
(Sorry didn't optimize it for smaller screens, when I wrote it long time ago)
The first token you read in will become the Matmin-Token, that can change the price and shows the status of the cash register.
