Even less than that -- if the card # starts with "4", it's Visa; 36|37 is Amex; 5[1-5] is MC and so forth. Totally with you, why do I have to choose from a dro

Even less than that -- if the card # starts with "4", it's Visa; 36|37 is Amex; 5[1-5] is MC and so forth. Totally with you, why do I have to choose from a dropdown -- you already have my number!