If it works, and people like it, great! I'm glad to have helped a little. Please let me know if you run into any trouble (my Twitter and email are on the site).
Unfortunately, for unrecognised card types it makes it impossible to proceed. I have just tried a maestro card number (beginning 6759) and am unable to enter any of the additional details (expiry, etc).
It may be worth adding a generic fallback for cards that are not recognised to account for unexpected edge cases.
Keep up the good work!
Glad you liked it :)
http://en.wikipedia.org/wiki/List_of_Issuer_Identification_N...
I hope that came across in my original comment - appreciate you giving us testers more fuel for the fire!
The "flip to the other side" to fill out the CVV is great. I might provide a second button/link, appearing once the CVV is completed, that says something to the effect of "valid input, next step"
Great product, I'd use it if I had a shopping cart!