The foreign cards are mainly overseas cards, that is, foreign credit cards. You need to remember some commonly used ones, such as the American Express AE card, the Japanese JCB card, the German Diners Club card, and those with VISA or Cards with the MASTCARD logo are all credit cards, and these are the businesses that can be opened with authorization from general bank POS machines. Of course there are other card types, but generally there are fewer of them. You should also remember the basic difference between credit cards. Not to mention the concave and convex card numbers, because some credit cards are also printed flat, mainly the valid year and month under the card number, as well as the name. The last 4 digits of the credit card and 3 are printed after the signature column on the back of the card. digit identification code, credit card also has laser markings, such as Bird and Beijing Paradise. Also, pay attention to whether the all-English wild card has the English letters of ceridicard, etc.

It is generally not recommended to pre-authorize debit cards. If you can do it, banks generally cannot freeze it because debit cards do not have this function.