USS (Uniform Symbol Specification)
The current series of symbology specifications published by AIM; includes USS-I 2/5, USS-39, USS-93, USS-Codabar and USS-128.
Lists the available characters or character sets which can be encoded with the symbology.
Verification / Barcode
The technical process by which a Bar Code symbol is evaluated to determine whether it meets the specification for the specified symbol.
Verifier / Barcode
A device that measures a symbol’s bars, spaces, quiet zones, and optical characteristics to determine whether it meets the requirements of a specific symbol. A verifier should not be confused with a bar code reader.
Vertical Bar Code
A bar code field printed in a rotation perpendicular to the horizon so that the individual bars appear as rungs on a ladder.
Void / Barcode
An area within a bar (of a bar code symbol) which is of high reflectance relative to the dark reflectance criteria, i.e. the bar or character is poorly inked, or where the intended printed area is missing. A void may cause a mis-read or cause the reader for fail to read the symbol.