If you are using a 1-card set without any backup, you won't be able to add an access code for your single card. Therefore, it's even more essential that you safeguard your physical card, as anyone who gets hold of your card will have access to the funds.

However, if you are using a 2 or 3-card set, you will be prompted to set up an access code when adding the backup cards, which is mandatory. Simply adhere to the instructions on the prompt screen to finalise the procedure.