So This smart Canadian Dude, Bought a soda machine for his building, and instead of waiting for people to get change to buy there soda, he hooked up the soda machine to take special(to that machine only) Vending Cards that can put money on through a specific on line account, so now instead of having to look for change all they have to do is scan(not even slide or swipe), See Video in the Details. @TatWza