Verified by Visa - Barclaycard Secure - Barclays Secure

A number of years ago I registered with 'Verified by Visa' although I also noted a reference to 'Barclaycard Secure'.
I have used this facility some considerable time ago, almost certainly with my Barclaycard, although I suspect not with my Debit Card.

I believe I still have my Username and Password although I've no idea what email address I gave, if any, or if that is relevant.

Having checked a number of pages on Barclays and Barclaycard sites I am still unsure whether I need to register separately for my Debit Card and Credit Card or which Security options relate to which card.

Secondly if my recollection of Log In details is incorrect, how can I re-register once for both cards, or separately for each if need be.

Thanks for any advice.