Linear (1D) Verification

ANSI Barcode Standards

Scan Reflectance Profile Graphic


Familiar barcodes such as UPC/EAN, Code 39, Code 128, and the like are “linear”, or “1D” barcode symbols.  These symbols are verified in accordance withe ANSI X3.182-1990 and ISO 15416.

Prior to 1990, when the ANSI barcode standards were published, there was no universally adopted method for barcode verification that adequately addressed the needs of industry.  The publication of ANSI X3.182-1990 marked the beginning of formal verification methods based on the “scan reflectance profile” of a barcode.  The so called ANSI methodology is the basis of most of the verification techniques adopted since.


ANSI X3.182-1990 – ensure compliance with 1D barcodes with the following Webscan products:

TruCheck Optima™For users that need to verify both linear (1D) and 2D barcodes. Multiple versions are available to your field of view and minimum x dimension requirements.
TruCheck Omni™Verify both large and small 1D and 2D barcodes with the TruCheck Omni. The TruCheck Omni has an extra large field of view and high resolution, assuring accuracy and precision.
TruCheck Rover™For people that need to sample check several production lines since its wireless and runs on a battery. The TruCheck Rover™ has the same field of view and x-dimension as the TruCheck Optima™ but does not require a laptop connection.