[ale] [OT] High Density Binary Paper Storage

[Lightner, Jeff]

I remember back in the day when paper storage took up lots of room that there were many microfiche solutions wherein one would scan the documents then shred them.   I don't recall what the lifespan of microfiche is but I do know that many libraries also used (may still use) that technology for keeping old copies of newspapers around for a long time.

This article:
http://en.wikipedia.org/wiki/Microform

Says in part:
" It is a stable archival form when properly processed and stored. Preservation standard microfilms use the silver halide process, creating silver images in hard gelatin emulsion on a polyester base. With appropriate storage conditions, this film has a life expectancy of 500 years. Unfortunately, in tropical climates with high humidity, fungus eats the gelatin used to bind the silver halide. Thus, diazo-based systems with lower archival lives (20 years) which have polyester or epoxy surfaces are used."






-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of JD
Sent: Tuesday, July 31, 2012 10:11 AM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] [OT] High Density Binary Paper Storage

On 07/30/2012 06:14 PM, Erik Mathis wrote:
> You could always print it all out ;)

Actually, this is a great long term way to store data. laser printed data lasts longer than any other form of media that I know about.  A quick search for high-density barcodes can show some of the methods.  Thought I'd seen some program that stored 20MB of binary data on a single sheet of paper, but couldn't find it.  I know there were rumors about storing 7GB of data if color was used, but I wouldn't trust the scanners to recover all that data later, after the colors faded a little.  It was not PDF417 https://en.wikipedia.org/wiki/PDF417

Anyone remember and have a link to the program that I can't recall?
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