Are credit card tear-off slips legal?

One of our customers was informed by their patient (who works in banking) that is it illegal to ask for credit card details in the mail or you may be liable for a $50,000 fine. The customer spoke to Tyro who looked into it and then confirmed that this is correct. We are not aware of anyone getting fined. If this concerns you and you want your credit card tear-off slip changed, please let us know.