As far as I know, 3D secure also works for debit cards. In many countries debit and credit cards use the same system (Visa/Mastercard). Have seen 3D secured pay

As far as I know, 3D secure also works for debit cards. In many countries debit and credit cards use the same system (Visa/Mastercard). Have seen 3D secured payments several times for my UK debit Mastercard.