Product Overview 1-17
Card Data Encoding
Card data should be encoded according to the ISO Standards 7810, 7811, 7812, and 7813.
In particular, 7810 describes the physical dimensions and layout of the card and mag
stripe. 7811/1-5 relate to the locations and magnetic characteristics of track data in the
mag stripe. 7812 is a numbering system to uniquely identify a card issuing institution in
an international interchange or closed environment. 7813 is specific to financial cards
(credit and debit).
• Track 1 data is 7-bit encoded, alphanumeric and a maximum of 79 characters.
• Track 2 data is 5-bit encoded, numeric only and a maximum of 40 characters.
• Track 3 data is 5-bit encoded, numeric only and a maximum of 107 characters.
See the ISO Standards specifications for more detail.
Card Thickness
The MSR module accepts standard cards within the thickness range of 0.68 – 0.84 mm.
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