"My opinion is backed up with experience that problems end up being caused by people choosing "mastercard" but entering a visa number (for example)." I can bac

"My opinion is backed up with experience that problems end up being caused by people choosing "mastercard" but entering a visa number (for example)." I can back this up and I am pretty far way from being ignorant on this matters. The problem is that some on-the-fly internet credit card generators (like MBnet in Europe) can give you a credit card number without saying if it's a Visa or a Mastercard. It gets worse because they actually generate both types of card numbers. So whenever I am presented with one of those fields to choose a card I error 50% of the time. Annoying. It's not enough for me to quit buying something but if you have also Visa Electron, Visa Debit and Visa Credit then I surely won't buy it, I would have to try so many combinations while filling parts of the form each time (because it won't keep the ccv, for example).