I would really appreciate if someone could tell me all about bar code labels and readers/scanners!?

Question

I have an offer of a job selling these and I need material to study the technology and products.
I thank all who answer before hand.

Answer 1

you could go to this link. there's also links to related sites there.

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

Answer 2

Actually, the lines represents numbers, the first part tells about the manufacture, and the other half tells you about the product. A special scanner called wand is used to read them, and the software deciphers them ito useful data about that particular product. You should go further to understand the details.