I just don't understand WHY you'd need a connected vending machine.
Credit Card transactions.
Wouldn't a dial-up connection that dumps transactions once a day be sufficient?
Maybe, but they're probably doing fraud checks on each swipe.
True... and all the more reason for them to be secured better.
The CC transaction connection is a likely a self contained bit like your stand alone reader at a mom and pop restaurant. Those are manually connected to a service on initial setup and then they just go on their merry way with their own secure tunnel.