Barcode readers vary in the technology they use to read a given barcode and in what they do with that information once it's read. Simple barcode readers can be quite inexpensive while those that are more technologically advanced might have an entire operating system on-board.

"Pen-style" or wand barcode readers contain a single-point light source which the operator physically drags across the barcode itself. These aren't very popular as the barcode label ultimately becomes damaged.

Basic single-line scanning readers use wither an array of LEDs or a scanning LED laser as a light source. These are lightweight, easy to use, and won't damage the barcode itself. Simple scanning readers generally plug into a computer's keyboard port and insert the information into whatever application or document is currently open.

Better barcode scanners use "fuzzy logic", allowing for more accurate reads of barcode labels that are damaged or are mounted on curved surfaces. Just above these features are those readers which can read the newer 2D barcodes. These barcodes can contain thousands of characters, giving the reader a considerable amount of information.

Barcode scanners are also available having embedded operating systems and full-color screens. Running embedded Windows CE or Linux software, these scanners can process a lot of information on their own, creating complete databases on-the-spot. The processed information can then be uploaded to a master system for further processing.

Choosing the right barcode scanner is an important issue. Companies that develop custom-tailored inventory solutions such as Tuppas Software can help in choosing the right barcode scanner for the job and in implementing its usage