bmo debit card activation

Not Helpful 20 Helpful 49. For help with Direct Banking and BMO MasterCard: Call 1-800-363-9992 if you are using a BMO Debit Card. Keep in mind, the latter may not be available with all card providers. Send message. You can also choose to remember your card number for future sign-ins, making signing in even easier. To access BMO Online Banking you will need your BMO Debit Card and the account number (s) linked to your card. You will also be asked some security questions. To register for Online Banking, you will need your BMO Credit Card.