hello, bank cards are not afraid of blisters. Generally speaking, it is no problem. Because bank cards are made of film. At the same time, the bank card mainly exchanges money through the magnetic stripe on the back. As long as the magnetic stripe on the back is not broken, it can be brushed normally.

Bank cards should try to avoid being put together with magnetic items. Because the magnetic stripe of bank cards is easy to be magnetized, you should never put mobile phones, palmtop computers and other magnetic items together with credit cards to avoid magnetization. It is best not to put the bank cards next to each other to prevent the magnetic strips from interfering with each other. You can't use it after degaussing, and it doesn't matter if you soak it in the water

You can't use it to avoid the magnetization of the bank card. You can usually separate the bank card with an ID card sleeve, which is anti-magnetic and waterproof.