If I change my PIN, does it update on my backup cards too?

No, PIN codes are securely stored independently on each card. Changing the PIN on one card does not automatically update the PIN on your backup

Each Burner, whether it's your primary card or a backup created with Card Duplicator, maintains its own separate PIN. This means you can set different PINs for each card if you prefer, or keep them the same for simplicity.

If you change your PIN on your primary card and want your backups to match, you'll need to update each backup card's PIN separately.