punch card management
To ease the management of punch cards, would it be possible to make punches either go into negative numbers, or not allow a punch card entry (with a warning)when a punch card is used up. Currently it continues to allow the customer to be checked in and just says 0 punches left. If a gym allows the customer to come in anyway and let them pay for a new card next time, it is dificult to keep track of how many punches they have used before they pay. It is also hard to know if that was the last punch or if they are over their punches.