ISO 7813 and ISO 7810

Track 1 layout: SS | FC | PAN | Name | ExtraData | ES | LRC
 SS         = Start Sentinel '%'
 FC         = Format Code 
 PAN        = Primary Account Number limited to 19 digits 
 FS         = Field Separation '^'
 Name       = Account holder name - up to 26 alphanumeric characters 
 ExtraData  = Expiration Date, Offset, Encrypted PIN, etc. 
 ES         = End Sentinel '?'
 LRC        = Longitudinal Redundancy Check 


Track 2 Layout: SS | PAN | FS | ExpireDate | ExtraData | ES | LRC
 SS         = Start Sentinel ';' 
 PAN        = Primary Account Number limited to 19 digits 
 FS         = Field Separator '=' 
 ExpireDate = YYMM Format or "=" if not present 
 ExtraData  = Product Code, Offset, Encrypted PIN, etc. 
 ES         = End Sentinel '?' 
 LRC        = Longitudinal Redundancy Check 
