<prompt> Human: EDIT: The card Im referring to is my debit card.  <response>: Debit will require a pin, and allow you to do cash back. Credit is just a signature.There are more complicated issues regarding the networks the payment is processed over and who makesloses money. Generalizing a bit: debit cards are often cheaper for a business to run than credit cards, though that distinction doesnt always hold true and is less prominent now than in the past. 