Symbol LS1203 Product Reference Manual page 151

Security Level (continued)
*Security Level 0
Security Level 2
Bi-directional Redundancy
Enable Bi-directional Redundancy to add security to linear code type security levels. When enabled, a bar
code must be successfully scanned in both directions (forward and reverse) before reporting a good decode.
Enable Bi-directional Redundancy
Symbologies 8 - 43
Security Level 1
Security Level 3
*
Disable Bi-directional Redundancy