"Made with compressible fibers for superior cleaning performance, this double-sided
cleaning card cleans the read head and entire track of a magnetic stripe reader
in one pass. 
Cleaning card can be used in insert, swipe, and motorized readers. Suitable for all
applications that include magnetic stripe card readers. 
The cleaning card cleans credit card readers in POS equipment and pay-at-the-pump units, debit card readers, ATMs, time and attendance units, badge readers, access control readers, hotel door keys, and readers in toll and transit systems (CR50 and 10 mils card sizes are available)."