The amount of difference in reflectance between the dark bars and the light spaces on a bar code. The percentage of successful reads the first time a bar code is scanned. Human eye-readable Information printed above or below the bar code. Human-eye readable portions of the bar code do not have to be encoded into the bar code itself. An optical bar code scanning device using a low-energy laser as its source of light.
Laser scanners have the best read rate of all types of scanners.
OCR Optical character recognition. A system that can scan human-eye readable text and transform the scanned information into an acceptable form for the computer to interpret. A clear space, containing no printed material, which precedes the start character of a bar code and follows the stop character of a bar code. The percentage of correct readings that will be obtained in one pass of the scanner over the bar code. Space - The light, reflective element of a bar code.