Reference Guide

Symbologies
261
I 2 of 5 Security Level
Parameter # 1121 (SSI # F8h 04h 61h)
Interleaved 2 of 5 barcodes are vulnerable to misdecodes, particularly when I 2 of 5 Lengths is set to Any
Length. The digital scanner offers four levels of decode security for Interleaved 2 of 5 barcodes. There is
an inverse relationship between security and digital scanner aggressiveness. Increasing the level of
security can reduce scanning aggressiveness, so select only the level of security necessary.
• I 2 of 5 Security Level 0: This setting allows the digital scanner to operate in its most aggressive
state, while providing sufficient security in decoding most in-spec barcodes.
• I 2 of 5 Security Level 1: A barcode must be successfully read twice, and satisfy certain safety
requirements before being decoded. This default setting eliminates most misdecodes.
• I 2 of 5 Security Level 2: Select this option with greater barcode security requirements if Security
Level 1 fails to eliminate misdecodes.
• I 2 of 5 Security Level 3: If you selected Security Level 2, and misdecodes still occur, select this
security level. The highest safety requirements are applied. A barcode must be successfully read
three times before being decoded.
note Selecting this option is an extreme measure against mis-decoding severely out-of-spec barcodes.
Selecting this level of security significantly impairs the decoding ability of the digital scanner. If this
level of security is required, try to improve the quality of the barcodes.
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