We are in the process of revising our Debit/Credit Card and I am trying to figure out where I can look make sure that the correct language is on the back of the card (what needs to be on it, does a phone number need to be included, etc.). Where can I go for the rules on the dimensions, fonts, language, etc. for these cards? Thanks.

You should be able to find something here:

http://www.mastercard.com/us/merchant/pdf/BM-Entire_Manual_public.pdf

Sorry - I don't have time to look through to find the exact section that applies to your question....

You might also check with your card vendor, they should have the information. We issue Visa debit cards, and I know that any card design changes I've made over the years have been submitted to Visa by our card vendor for approval.