Example of credit card form, Expiration Date option All in One {MM}-{Year} - ideas taken from http://baymard.com/blog/how-to-format-expiration-date-fields https://www.dropbox.com/s/wgp1k7817sj9ckg/dynamically%20change%20the%20security%20code%20description.mov

As it appears on the credit card
12-19 digits, spaces are allowed
The date your card expires, typically on front of card
3-4 digit code, typically on the back of your card