Types of optical code readers??

Question

pls help me~~~~
i'm finding the types of optical code readers....

Answer 1

Anything from the infrared readers than scan products for prices at retail outlets to zip code readers for envelopes & packages at the post office.

I assume you have a school assignment where you must list various examples of this technology.

Helpful links :
http://educ.queensu.ca/~compsci/units/encoding/barcodes/history.html

Types Of Bar Code Scanners
http://www.adams1.com/pub/russadam/readers.html

regards,
Philip T

Answer 2

Do you mean readers like bar code scanners or Optical Character Recognition programs that turn pictures of words into text documents?

Answer 3

It narrows down your handle a sprint greater. My Zip code covers 7.5 sq. miles, yet my Zip code plus "-8247" potential my block, south fringe of the line. ("-8248" is the north fringe of the line.) Amazon, of direction, has the gigabyte-sized postal database that may seem those issues up in milliseconds. (in certainty, I unquestionably have one at paintings.)