Yes.
We will validate the username and password of the bank account (and any two-factor security) on the bank account each time, through our open banking connections. This is to ensure the owner (or joint owner) of the bank account and/or debit card have granted permission to perform the transaction.
If a user passes this security check, the bank account can be linked on multiple cards. We reserve the right to unlink any account where we suspect any fraud or see other suspicious activity.