Does the VIABUY Prepaid Mastercard card have a 4-digit or 6-digit PIN? Amanda Oliver 11 May 2022 09:24 Updated The PIN of the VIABUY card consists of 4 digits. Some ATMs require a 6-digit PIN, however, if the ATM you're trying to use is asking for a 6-digit code, your 4-digit PIN will work. Related articles What can I do if my new IBAN is not accepted for bank transfers? I cannot log in on the new app My card expires soon, how do I get a new one? Keeping your card details safe Comments 0 comments Article is closed for comments.