SC : Service code, 3 digits or "=" if not present. ED : Expiration date, YYMM or "=" if not present. PAN : Primary Account Number, up to 19 digits, as defined in ISO/IEC 7812-1. The maximum record length is 79 alphanumeric characters. LRC : Longitudinal redundancy check, calculated according to ISO/IEC 7811-2. DD : Discretionary data, balance of characters. NM : Name, 2 to 26 characters (including separators, where appropriate, between surname, first name etc.). Format "A" is reserved for proprietary use.) FC : Format code "B" (The format described here. ISO/IEC 7813 specifies the following physical characteristics of the card, mostly by reference to other standards: Embossed characters by reference to ISO/IEC 7811 Embossing of expiration date the format (MM/YY or MM-YY) Magnetic stripe by reference to ISO/IEC 7811 Integrated circuit with contacts by reference to ISO/IEC 7816-1 Integrated circuit without contacts by reference to ISO/IEC 10536-1, ISO/IEC 14443-1, and ISO/IEC 15693-1 Magnetic tracks Track 1 physical characteristics, such as size, shape, location of magnetic stripe, etc. ISO/IEC 7813 is an international standard codified by the International Organization for Standardization and International Electrotechnical Commission that defines properties of financial transaction cards, such as ATM or credit cards. JSTOR ( November 2015) ( Learn how and when to remove this template message). 
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