BARCODE & SCAN OPTIONS
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The add-on symbol is appended to the EAN-13 barcode. The process is similar for UPCE, UPCA,
and EAN-8 barcodes. Note that all the UPCE, UPCA, EAN-8, and EAN-13 formatting and
conversion options are in effect. The following table should help explain the effect of various
options for EAN-8 barcode 12345670 + 12.
The add-on symbol contains neither a check digit nor a terminating guard band. Every effort
has been made to reduce the decoding error; however, it is likely to decode a partial scan of a
5-digit add-on symbol as a 2-digit add-on symbol. It is strongly recommended that the
minimum security level be set at 2 while decoding add-on symbols. Since the decoder takes a
conservative view on the add-on symbols, it is likely that the add-on symbol will be missed in
the auto-discrimination mode. Auto-discrimination mode should then be avoided.
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