Interesting, but you've gotta worry with folks that know how to hack into machines like that and get free stuff. They're out there, beware. I read once where this son and dad from New York hacked into this ATM machine and got 500 grand outa it. A month later, the police arrested them though, so they got caught in the long run. I myself?, i'd rather buy from a person, not a machine, i feel better about the old ways of doing it. Kinda like those self check-outs at Wal-Mart, i bet someone out there has sneaked merchandise from scanning it on those machines & stole it, i betcha...the reason they chose to do the self check-out, so they could get some freebies as well..never know, but i bet some have done that. But again, if those carnivals choose to go with the automatic ticket machines, beware of those that know how to trick 'em to get free tickets...or, scammers should i say. I'd keep it the old fashioned way if i were you, buy tickets from a person.
~Ben