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Digital hard copy?
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23rd Jun 2012, 12:32 pm
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jjl
Octode
Join Date: Jan 2003
Location: Ware, Herts. UK.
Posts: 1,082
Re: Digital hard copy?
Indeed, 2D barcodes such as the QR codes that seem to be appearing everywhere can encode several kilobytes of data in a small printed area. See here
http://en.wikipedia.org/wiki/QR_code
John
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