MagnePrint is a dynamic card authentication technology based on the unique physical properties of the magnetic stripe, also referred to as the stripe's digital identifier or (DI). It provides validation that the card itself is genuine and that its encoded data has not been altered. The term itself is derived from "Magne" as in magnetics, and "Print" as in fingerprint.
Just as fingerprints can uniquely identify human beings, Magnetic Fingerprints (MagnePrint) can uniquely identify magstripe cards. This is possible because of the stripe composition.
A magnetic stripe is created from billions of ferrous oxide particles. The particles are various shapes and sizes and are mixed in a random pattern when the magnetic slurry is prepared. They are sealed in place when the slurry dries, during the tape manufacturing process.
Once this occurs, the stationary particles emit a permanent, repeatable and distinctive magnetic signal, which is the MagnePrint. The MagnePrint, like a fingerprint, remains basically unchanged for the life of the card.
Data and MagnePrint are Linked
The MagnePrint is in the background of the stripe. It is sometimes referred to as "noise". It does not interfere with the cardholder personal data encoded in the foreground. Nor can the encoded data remove or erase the MagnePrint. Furthermore, the MagnePrint and the cardholder personal encoded data can be linked.