> I've had no luck convincing him to buy a new computerized one so he can accept credit cards You can still accept credit cards without a new register. It's ju

> I've had no luck convincing him to buy a new computerized one so he can accept credit cards You can still accept credit cards without a new register. It's just a different machine. They don't have to be integrated. Almost every single doctor's office accepts credit card and exactly NONE of them have a register. The way it works is you charge the card on a separate machine, type in the total, have them sign and put the slip somewhere and press "paid with credit" on the register if it is computerized or if it isn't then just ignore the register for that transaction.