Yeah officially the Mastercard and Visa networks support 6 digit PINs. In reality there are so many POS devices out there that don’t support 6 digits, it actua

Yeah officially the Mastercard and Visa networks support 6 digit PINs. In reality there are so many POS devices out there that don’t support 6 digits, it actually ends up being safer to use a 4 digit PINs because the 6 digit PIN fallbacks are completely insecure and unreliable.