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//so that it doesn't look all that ugly// Not a utilitarian then...Personally barcodes are quite elegant.
No bone though as your suggestion for "Colour" barcodes could look good; so long as current scanners can pick them up. |
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Somewhat baked. A Korean company offers a small square 2D color bar code. I didn't save the link from a few months ago but I might find it eventually. As for inconspicuous, digital watermarks [link] can be embedded in the backgound or pictures of a product and be imperceptable. They can be made to function exactly the same as a barcode. They can also be read (using new software) with many existing barcode scanners - especially the 2D barcode scanners that require imaging sensors. |
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As for the detection of spoiled milk or expiration timing, that's a chemical/ink problem that is independent of the barcode/watermark but is easily added. |
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Why not make Tartan bar codes? There are hundreds of possible combinations and in a matrix configuration there could be many more. It would look more pleasing than the black and white bars used today. |
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Agreed coloured bar codes are baked but the disappearing bar code is very clever, preventing purchase of out of date stock. Anybody know how difficult it would be to get ink to fade with time accurately? |
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I know it could be easily done with temperature, bottles Newcastle Brown Ale have a star which appears only when the beer is sufficiently chilled. |
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