MSR003 Three-track magnetic card readers can read and
capture data from all three tracks typically present in a magnetic
stripe to complete a transaction. The bidirectional configuration
of the reader enables cards to be swiped backward or forward at
a speed of up to 120cm per second.

An LED indicator turns red to alert the user of a decoding error.
Adhesive strips can be used to mount the magnetic card reader
onto a counter or another flat surface.