
4-17
LS 1000 Product Reference Guide: Chapter 4, Programming the LS 1004
UPC/EAN Security LevelThe scanner offset 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 aggressiveness, 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 in its 
most aggressive state, 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 mis-decodes before others (i.e., 1, 2, 7, 8). If you are experiencing mis-decodes of 
poorly printed bar codes, and the mis-decodes are limited to these characters, select 
this security level.
Security Level 2 - If you are experiencing mis-decodes on poorly printed bar codes, and 
the mis-decodes are not limited to characters 1, 2, 7 and 8, select this security level. 
UPC/EAN Security 
Level 0
UPC/EAN Security 
Level 1
UPC/EAN Security 
Level 2
coverBook  Page 17  Monday, December 1, 1997  2:19 PM