Security Level 0; Security Level 1; Security Level 2; Security Level 3 - Symbol LS3400 Product Reference Manual

Security Level
The scanner offers four levels of decode security for UPC/EAN bar codes. Increasing levels of security are
provided for decreasing levels of bar code quality. There is an inverse relationship between security and
scanner decode speed, so be sure to choose only that level of security necessary for any given application.

Security Level 0

This is the default setting which allows the scanner to operate fastest, while providing sufficient security in
decoding "in-spec" UPC/EAN bar codes.

Security Level 1

As bar code quality levels diminish, certain characters become prone to misdecodes before others (i.e., 1, 2, 7,
8). If the scanner is misdecoding poorly printed bar codes, and the misdecodes are limited to these characters,
select this security level.

Security Level 2

If the scanner is misdecoding poorly printed bar codes, and the misdecodes are not limited to characters 1, 2,
7, and 8, select this security level.

Security Level 3

If Security Level 2 has been tried, and the scanner is still misdecoding, select this security level. Be advised,
selecting this option is an extreme measure against misdecoding severely out of spec bar codes. Selection of
this level of security may significantly impair the decoding ability of the scanner. If this level of security is
necessary, try to improve the quality of the bar codes.
*

Security Level 0

Security Level 1
Security Level 2
Security Level 3
Symbologies 6 - 49