2-24  Theory of Operation 
 
Magnetic Media Locations 
The physical location and size of the magnetic stripe on a card follows the 
specifications outlined in the two drawings below. The first graphic is for a two 
or three track card (ISO/IEC and JIS Type I). (Note that under the ISO and JIS 
standards, even if only one of the three tracks is used, the minimum track size 
follows this specification.)