How much data can I store on a magnetic stripe card?
The following is
the amount of data that can be encoded to a magnetic stripe (per ISO 7811
format):
- Track 1: 210 bits/inch (BPI), 7
bits/character (MPC), maximum of 79 alpha-numeric characters.
- Track 2: 75 bits/inch (BPI), 5
bits/character (MPC), maximum of 40 numeric characters.
- Track 3: 210 bits/inch (BPI), 5
bits/character (MPC), maximum of 107 numeric characters.
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