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 How can I contact customer service? How do I activate my new VIABUY card? How can I open my account and get my VIABUY Prepaid Mastercard? I've loaded the card but I can't see the money. Why is that? My payment was declined, has my money been taken from my account? Comments 0 comments Article is closed for comments.