Comment cash cards (Score 1) 861
My university had an old low end cash card for things like copying, laundry, and vending machines. seperate from the dining cards I might add.
if you managed to get your card below the lowest threshold selling point in the system ($.07 or less IIRC) a certain machine on campus would error and write a - amount. every reader at that point would read the card as $199.00 and then write a corrected number after use. everything was available. the worst part was, I never even managed to use up one of those cards in 4 years.
really cool and so barely worthwhile since how much vending machine food can one person eat...even for slashdotters.
if you managed to get your card below the lowest threshold selling point in the system ($.07 or less IIRC) a certain machine on campus would error and write a - amount. every reader at that point would read the card as $199.00 and then write a corrected number after use. everything was available. the worst part was, I never even managed to use up one of those cards in 4 years.
really cool and so barely worthwhile since how much vending machine food can one person eat...even for slashdotters.