Do I need to enter a password to report the loss of a bank card?

No need. According to the relevant regulations of major banks, the loss of bank cards can only be reported in the following ways:

Loss reporting through online banking: If online banking is enabled, some banks can apply for loss reporting through online banking.

Telephone loss reporting: To call the bank customer service phone to apply for loss reporting, you need to provide the ID number of the card owner. Generally speaking, this kind of loss reporting is oral and valid for only a few days. Finally, you need to report the loss at the bank counter.

Apply for loss reporting at the bank counter: apply for loss reporting at the counter of the card issuer with bank card;

Note: there will be a certain fee for reporting the loss.