[rtkwe]

Well to change the fares they just change the amount deducted from the card. For this change they'd have to make a change that only applies to some of the machines. In a reasonable architecture that's a few lines in a config file plus some way of managing which machines get that file (possibly cumbersome if they didn't plan for this).

[madeofpalk]

You're making a lot of assumptions.

[rtkwe]

Any comments on how easy or hard the change would be are.