Select increasing levels of security for decreasing levels of barcode quality. There is an inverse relationship between security, and device aggressiveness, so choose only that level of security necessary for any given application.
Code 39 Security Level 0 - Allows the device to operate in its most aggressive state, while providing sufficient security in decoding most "in-spec" barcodes.
*Code 39 Security Level 1 - This setting eliminates most mis-decodes
Code 39 Security Level 2 - Select this option if Security Level 1 fails to eliminate mis-decodes.
Code 39 Security Level 3 - If you selected Security Level 2 and mis-decodes still occur, select this security level.
Selecting Security Level 3 is an extreme measure against mis-decoding severely out of spec barcodes. Selecting this level of security significantly impairs the decoding ability of the device. If you need this level of security, try to improve the quality of the barcodes.
