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Re: Barcodes missing checksum digit

by Nicholas Humfrey-3 :: Rate this Message:

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On 22/02/2009 03:28, "Chad Wilson" <chad.wilson@...> wrote:

> On 22/02/2009 5:35 a.m., SwissChris wrote:
>> I don't think adding two release events makes sense: it's not like for
>> box sets where you have two different barcodes. Here's one and the
>> same barcode, with the one printed on the cover being incomplete and
>> thus invalid. I'd go for solution #2 ­ eventually, to refrain people
>> with disc in hand from making wrong "corrections" ­ with a annotation:
>> "Incomplete barcode on back cover of disc completed"
>>
>> On Sat, Feb 21, 2009 at 7:21 PM, Brant Gibbard <bgibbard@...
>> <mailto:bgibbard@...>> wrote:
>>
>>> So either we:
>>> 1. Kept what is written on the back cover ("4228374212") 2.
>>> Or save the correct barcode ("042283742123") in database,
>>> which can be retrieved e.g. with
>>> http://users.musicbrainz.org/~luks/ean.html
>>     <http://users.musicbrainz.org/%7Eluks/ean.html> from the
>>> incomplete barcode.
>>>
>>> I would go for solution #2, since otherwise the barcode
>>> information won't be computer-usable. I'm thinking about
>>> people using a barcode reader on the release, e.g. libraries.
>>>
>>> - Aurélien / murdos
>>
> I regularly come across these, and I /always/ fix the barcode. The
> problem here is the /printed/ representation, rather than the actual
> barcode, which will have correctly encoded all digits; someone's just
> decided to leave them off the printing. If you were to scan the barcode
> with an actual scanner, you would get the full number, as you suggest.
> This is what will be stored at AMZ etc.
>
> I don't think there's any real value in retaining/duplicating the
> incorrect printed representation - there's always catalog numbers for
> that. Adding an annotation can't do any harm though, and is a good idea.

I agree - it is just duplicate data. Would some JavaScript wizzyness be
possible to automatically help people with entering them?

The Media Catalogue Number (MCN) is stored on some CDs, which is supposed to
be the same as the barcode number. However I have never found a CD with it
on. Has anyone found one, and does it include the full number?


nick.



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