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Old March 5th, 2018, 04:30 PM
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Dan Korn Dan Korn is offline
FusionPro Senior Engineer / Forum Moderator
Join Date: Aug 2008
Location: Chicago, IL
Posts: 4,277
Default Re: Barcode 128 modulo 103 check digit

Originally Posted by View Post
i have used the "128 Barcode Rule", but it dosen't give me any check digit
Yes, it does. The check digit is encoded into the barcode. If it wasn't, the barcode would not scan.
Originally Posted by View Post
i also need it to be as human readable.
Why do you need the check digit to be part of the human readable barcode? The human readable part is just that; the actual encoded data, for a human to read. The check digit is, as its name suggests, a checksum, to ensure the validity of the encoding and decoding for the scanning operation. It's not part of the actual data.

This is explained further on the IDAutomation web site:

Also, what "human readable part" do you mean? If you use the "128 Barcode Rule", and select one of the fonts installed with FusionPro, with a name starting with "IDAutomationC128", you'll only get the actual bars, with no human readable digits. If you want human readable text as well, you can just typeset it separately underneath the barcode.
Originally Posted by View Post
if I put in 234146900158087 then the check digit should be 0, so the full barcode will be 2341469001580870.
Again, no, it really shouldn't. The scanned barcode should yield exactly the input data. The check digit is just an implementation detail of the encoding algorithm.

In fact, in FusionPro, if I use your example data "234146900158087" in the "128 Barcode Rule", compose, and scan the resulting barcode, the result reported by the scanning software is the same as the input data, without any extra check digit, which is correct.
Originally Posted by View Post
But i can get this with the "128 Barcode Rule", what are i'm doing wong ??
You're misunderstanding how the 128 barcode works.

Where are your requirements that specify a need for a human readable component of the barcode coming from?
Dan Korn
FusionPro Developer / JavaScript Guru / Forum Moderator
PTI Marketing Technologies | Printable | MarcomCentral

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