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Subject Topic: How to identify whether UPC-E or EAN-8 Post ReplyPost New Topic
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vaughnd
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Joined: February 01 2006
Location: South Africa
Posts: 1
Posted: February 01 2006 at 1:21am | IP Logged Quote vaughnd
Hi, I'm struggling with recognising whether a barcode is UPC-E or EAN-8 in software I'm writing in South Africa.

I receive barcodes in many different formats from a number of files and need to reduce them to their basic form without check digits, i.e.
00000000123013 => 123013
01230137             => 123013

00000000565121 => 565121
05651214             => 565121

00000002201029 => 220102

00000002200321 => 220032
02200321             => 220032

All of these work fine, and I think they're UPC-E, but the one below has a check digit of 4 so I end up with 1000931 instead of 100093 as I should. I think it's because it isn't a proper UPC-E barcode, but even if it's a EAN-8 they must be adding a bad check digit?

00000001000931 => 100093
01000931             => 100093

Any help or pointers on recognising bad barcodes or identifiying whether a barcode is EAN-8 or UPC-E will be appreciated.

Vaughn
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glitch
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Joined: January 25 2003
Location: Canada
Posts: 280
Posted: February 01 2006 at 9:18am | IP Logged Quote glitch

There is no conversion from EAN-13 to EAN-8. It is likely that the number is a UPC-E with wrong checksum.

http://www.morovia.com/education/symbology/ean-8.asp
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