what size are most standard id's
Dimensions of a Credit Card. The size and shape of credit cards are defined under the international standard ISO/IEC 7810:2003. This specific standard mentions the physical standards for various types of identification cards. Under the ID-1 format, ID cards and banking cards must carry a dimension of 85.60 millimeter by 53.98 millimeter or 3.370 inches by 2.125 inches. These include debit cards, ATM cards and credit cards.