RE: Bar Code Shopping List (Was: Tesco Launches Wireless Shopping)

[Robert Chasmer <robert.chasmer@xxxxxxx>]

Stuart Poulton [mailto:swp@xxxxxxx]
> Having looked at the Product file, it would appear that it
contians,
> the product name/ descprition, price, ? product wieght,
classification
> 
> No sign of barcodes.

I've spent a bit of time trying to extract a tab seperated file from
this
dat file, and maybe decode a barcode for each product.  The file seems
to
have 12,140 products in it which I guess might be all the ones they
stock.

There is a 4 byte string before each product which I thought might be
an
encoded integer but at this precision could only hold numbers 0 to
4294967296 or 10 digits.  Though most barcodes are 13 digits including
the
check digit.  It could just be another unique product ID which Tescos
uses
but I'd hoped not.

I'm going to put my decoded file up on Yahoo, in the hope that someone
else
can get a barcode out of the string.  It descibes the 4 digits as
decimal
numbers and tries a couple of the standard integer decodings.


Rob

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