Additional cardholders aren’t able to log into Barclaycard online servicing, so unfortunately, they can't see their PIN online. However, the Primary Cardholder is able to view the PINs for all additional cardholders on the account.
You can view your PIN by logging into Barclaycard online servicing and selecting 'View your PIN securely', which you'll find under 'Account services' in the top menu.
If you haven’t already, log into or register for Barclaycard online servicing.