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Author Topic: backup(restore) files in a printed paper  (Read 1380 times)

psionics

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backup(restore) files in a printed paper
« on: December 06, 2015, 04:43:20 AM »
I found a software for it and it is open source:
http://ollydbg.de/Paperbak/

my request is, how about implementing this app for android phones? but instead of scanner, to use a high-res camera.
« Last Edit: December 06, 2015, 04:56:52 AM by psionics »

ayryq

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Re: backup(restore) files in a printed paper
« Reply #1 on: December 06, 2015, 06:42:46 PM »
Have you tested data recovery using a photograph rather than a scan?

ayryq

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Re: backup(restore) files in a printed paper
« Reply #2 on: December 06, 2015, 06:46:57 PM »
Also I wonder if the program accepts JPG input, or is a bmp conversion required first?

Note: I am just thinking aloud (such as it is). I have no ability whatever to actually accomplish what you want. However I think the original program is pretty neat; I'd never heard of such a thing. Funny how a concept that seems like it should belong in the 1970s is really something like a predecessor to a QR code.

4wd

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Re: backup(restore) files in a printed paper
« Reply #3 on: December 06, 2015, 06:53:38 PM »
I remember watching an item on BBC's Tomorrow's World where they used something similar to QR codes to do the same thing - I think that was back in the '80s.

How much data are you talking about?

There are already QR code generators/readers available for Android that will let you encode/decode text.

mwb1100

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Re: backup(restore) files in a printed paper
« Reply #4 on: December 06, 2015, 07:22:04 PM »
See this thread from way back:  http://www.donationc...ex.php?topic=10216.0

Interestingly, even though it's a discussion largely about PaperBack, I didn't seen an actual link to PaperBack itself - just a link to a page (now defunct) talking about it and presumably providing a link.

ayryq

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Re: backup(restore) files in a printed paper
« Reply #5 on: December 06, 2015, 07:45:00 PM »
OK, that's actually pretty cool. Inspired by a recent xkcd, I tried the google source code as a data source:

first part of 32-page PDF:
Clipboard01.jpgbackup(restore) files in a printed paper

complete ½ page output of paperbak
Clipboard02.jpgbackup(restore) files in a printed paper

Edit: source files attached.
« Last Edit: December 06, 2015, 07:51:18 PM by ayryq »

ayryq

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Re: backup(restore) files in a printed paper
« Reply #6 on: December 06, 2015, 08:06:24 PM »
With regards to QR codes, I found on Wikipedia that the longest text string encodable in QR is 1852 characters - not even enough for the first line of the google source I posted (>3000 chars).
There are already QR code generators/readers available for Android that will let you encode/decode text.