Definition of some stuffies;;

Well considering my IPT exam was a flunk ._. i dont know about the rest of the class though we gotta look up some stuff. ga

Bar code reader:
any device that can convert a bar code image into data
http://www.blogger.com/www.lomag-man.org/glossaire%20dico/glossairelinventaire/glossary-of-inventoryaccuracy.php

Magnetic stripe:
A magnetic stripe card is a type of card capable of storing data by modifying
the magnetism of tiny iron-based magnetic particles on a band of magnetic material
on the card. The magnetic stripe, sometimes called a magstripe, is read by physical contact and swiping past a reading head.
- thankyou wiki :P

http://en.wikipedia.org/wiki/Magnetic_stripe