Some time ago (it might have started with Apple) designers started to use pattern of auto-detection of credit card type in credit card forms.
On the screen above you can see such a form (it's Apple). If you start to type in your credit card number all other credit card types icons will fade to gray.
I wonder if you have any experience with this kind of forms and do you know if they're improving the conversion rate.
At UXPin - the UX Design App we've decided to take a shortcut and just don't ask for a credit card type.
Do you think this lack of interactivity might decrease efficiency of our form?
If you want to play with examples above - here you'll find some wireframing templates: http://uxporn.uxpin.com/credit-card-form/