What can people from financial investment companies do with your bank card?

Empty bank cards can be used by others to save money and withdraw money, and can also be used to transfer money and remit money. Empty bank cards can also be used by others to do illegal and criminal things, such as money laundering. And bank cards mainly bear great risks. Don't give the unused bank card to others, but cancel the account at the bank, so as not to defile your identity information and cause economic losses.