First, you should know the two major categories of barcode scanners, image-based barcode scanner and laser-based barcode scanner. There is a camera embedded in a image-based barcode scanner. The scanner is performed by taking a photo of the complex barcode and decoding the barcode. Usually it can be a better choice than a laser scanner for damaged and dirty barcode. While the laser barcode scanner is much better than a imager for longer scanning distance and wider angle. The laser barcode scanner is worked through mirrors and lenses. With more advanced technology, the laser-based barcode scanner is much more expensive than the image-based barcode scanner.

Then you should consider which kind of barcode scanners, 1D or 2D. 1D barcodes and pen scanner are widely used and can read some typical symbologies, such as code 30 and UPC. UPC are most widely seen on merchandises and products. There are also some other symbologies such a s manufacturer serial numbers and inventory locations. Most scanners are designed for the symbologies you specify. So make it clear which symbologies the scanner can read before you buy a 1D scanner. The 2D has a big infomation volume than the 1D and can read the damaged label.

Which one you need, wireless, mobile or fixed? You should know whether you need a long cord or a mobile handheld scanner. A mobile computer barcode scanner can be connected to a mobile devices such as a mobile computers thus the software application be linked directly to the scanner. While the price of this advanced scanner is as high as more than $1000. The handheld barcode scanners usually connected to a PC. The read results are mostly depend on the PC. It is widely used in the payment processes. Handheld scanners are usually wireless and can scan precisely from about 20 feet away from the computer.

Now with the development of technology, more and more functions are added to the barcode scanner. By considering the tips above and other informations, you can make a good decision.