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Appendix D: Magnetic Stripe Standard Data
Formats
International Standards Organization (ISO) Credit Card Format
Track 1
Field ID Contents Length
Character
a Start Sentinel 1
b Format Code “B” 1
c Account Number 13 or 16
d Separator “^” 1
e Cardholder Name variable
f Separator “^” 1
g Expiration date 4
h Optional Discretionary data variable
i End Sentinel 1
j Linear Redundancy Check
(LRC) Character 1
Track 2
a Start Sentinel 1
b Account Number 13 or 16
c Separator “=” 1
d Expiration date “YYMM” 4
e Optional discretionary data variable
f End Sentinel 1
g Linear Redundancy Check
(LRC) Character 1
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