A credit card is a special carrier card issued by a commercial bank to individuals and units, which is used to make purchases, spend money and deposit and withdraw cash from the bank. It is in the form of a card with the name of the issuing bank, expiration date, number and cardholder's name printed on the front and a magnetic stripe and signature on the back. The credit card we are talking about now generally refers to a debit card only. ?

in foreign countries, real credit cards generally don't need passwords, and they are mainly identified by signatures, which is quite different from that in China. If there are many types,

According to the card issuing organizations, they are visa card, MasterCard, American Express card, JCB card, Discover card (America), United Credit Card (Taiwan Province), Diners Card, NETS (Singapore) and Diners Card. ?

by currency: single-currency card and dual-currency card. ?

according to credit rating: ordinary card (silver card), gold card, platinum card, unlimited card, etc.

according to whether it is jointly issued, it can be divided into joint cards, standard cards (non-joint cards) and identity cards. ?

according to the card shape and material: standard card, mini card, irregular card, transparent card, etc. ?

according to information storage media: magnetic stripe card and chip card. ?

according to the relationship between cards, it is divided into main card and auxiliary card. ?

according to the identity of the holder: personal card, business card and company card.