What bank card can't be pre-authorized in the hotel?

The credit card number is 16 digits. It doesn't make much sense to use this number to distinguish savings cards. Did you know the credit card when you applied at the bank? If you really can't remember, you can show it to the bank. Bank cards are generally divided into two categories, one is credit card and the other is debit card (savings card). The difference is that credit cards can be overdrawn, while debit cards can only be used after saving money. At present, most credit cards and debit cards use the magnetic stripe on the back of the card to store information. A chip card is a card embedded in an electronic chip (similar to a second-generation ID card). In hotels, only credit cards can be used for pre-authorization, but debit cards can also be used where credit cards can be used. You can pay the room fee by debit card first and get the cash back when you check out.