Track format of magnetic stripe cards


L. Padilla

This page contains an explanation about the format of the three magnetic tracks in standard identification cards, particularly those used in financial transactions, i.e., credit and debit cards. It is a summary of the international standards ISO 7813 (tracks 1 and 2) and ISO 4909 (track 3).

E-mail: padilla at domain "gae ucm es" (my PGP/GPG public key)
First version: 21-Dec-2001, last update: 12-Dec-2002
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