Live data from Hacker News

PaperBack – How to store data on a single A4/Letter sheet

ollydbg.de

101–110 of 119 posts

Re: PaperBack – How to store data on a single A4/Letter sheet

#101
post #80

Earlier quoted context omitted.

I did not know this, do you have a source?

http://www.instructables.com/id/Yellow-Dots-of-Mystery-Is-Yo... http://www.pcworld.com/article/118664/article.html https://en.wikipedia.org/wiki/Printer_steganography http://seeingyellow.com/

Fascinating, thanks for the links!

Re: PaperBack – How to store data on a single A4/Letter sheet

#102

Earlier quoted context omitted.

Many projects fall in this trap. I use Awesome as my window manager, and the Awesome theming library is called Beautiful. Now try googling "awesome beautiful wallpaper"...

UPD: http://i.imgur.com/TVLZgqw.png I don't know, how google did it, but the first result for exactly the query of yours is: http://awesome.naquadah.org/wiki/Beautiful What surprises me, is that it works in firefox private mode, where neither of search customizations should work, in theory (fresh clean cookies and local storage, isn't it?). However, yeah, I do indeed google awesome-related stuff from time to time. UP…

If you search for, and click on, a lot of tech/linux related stuff, Google likely bubbled you such that those kinds of results come out on top.

Re: PaperBack – How to store data on a single A4/Letter sheet

#103
post #52
post #48

Earlier quoted context omitted.

Its real name is nautilus

Which is not present in the icon, the menu bar, the about dialog or the help file. http://imgur.com/v4jH7Yf At least they've managed to be consistent with the rename. Compare this to Packages, which is called "packages", or "software", or "software install" or "packagekit". http://imgur.com/dFidCWL

Gnome do that with a crap load of their software, i guess they think it is "user friendly".

For example the binary for their file archive program is file-roller, but the entry in XDG compatible menus are Archive Manager.

Frankly i find that Freedesktop has been another example of "the road to hell is paved with good intentions". More and more Freedesktop projects reminds me of the kind of Windows stuff i moved to Linux to get away from.

Re: PaperBack – How to store data on a single A4/Letter sheet

#104

this has some pretty powerful applications for example for politics or mass dissemination of paper based digital files for the public to quickly consume. Imagine, if students could start posting free textbook pdf files just by handing out a piece of paper which you could scan, or maybe with a phone one day, and instantly receive the file. Why not QR code? QR code needs connectivity while this solution would just requ…

On that note, i seem to recall that certain encryption algorithms were transported out of USA by way of book back in the day.

Back then (and i think the law is still in place) anything beyond something like a 90-bit key was considered a military weapon, and thus needed relevant export licenses.

But this only applied to working binaries, not the code printed on paper. So what some researchers did was to get the code printed in a book, using a OCR friendly font, and then ship the book to something like Switzerland where it was scanned, compiled, and put online.

Re: PaperBack – How to store data on a single A4/Letter sheet

#105
post #23
post #21

Couldn't you store more data in a color image? Just curious.

Probably, Microsoft did something like that (and failed to gain popularity) http://tag.microsoft.com/what-is-tag/home.aspx

I seem to recall it was used to print some HDCP keys on t-shirts.

Re: PaperBack – How to store data on a single A4/Letter sheet

#106
post #33

Earlier quoted context omitted.

I commend your enumeration of religious and mystic texts.

Yes I was also impressed. But in making the point, the poster surely went overboard - Mahabarata (I just read about it on Wikipedia) is the "longest poem ever written", ten times as long as the combined Iliad and Odyssey, and at 1.8 million words that is going to be hard to fit into 1.5 megabytes even by itself - unless it is massively redundant I don't see how you can do it. The entropy per word has to be about ~1 b…

And it would also require unicode, so it gets even more harder since you have to go out of ASCII range.

Re: PaperBack – How to store data on a single A4/Letter sheet

#107
post #49
post #6

So I'd like this on medium that's a bit more permanent than paper, but with similar information density per kg, and similar re-creatability without having any of the original tools available. I'd like to store data for say 100 thousand years.

You'll want something that an unsophisticated civilization can make copies of. Might be interesting to have a stylized form of a modern language with layout that incorporates simple integrity checks. The monks who copied documents in the middle ages made a lot of errors.

You could laser burn it onto the rubber material stamps are made of. That would allow for easily making copies on paper.

Not sure whether "stamp" is the right word. I'm talking about this: http://www.stempel-wolf.de/de/img/stempel/herstellung/gravur...

Re: PaperBack – How to store data on a single A4/Letter sheet

#108
post #6

So I'd like this on medium that's a bit more permanent than paper, but with similar information density per kg, and similar re-creatability without having any of the original tools available. I'd like to store data for say 100 thousand years.

A company called Norsam (norsam.com) can engrave text on a 5" nickel or gold disk using ion deposition. They get 20,000 pages per disk. Nickel will not corrode. All any future civilization would need to read it back is a microscope and OCR.

Re: PaperBack – How to store data on a single A4/Letter sheet

#109

Earlier quoted context omitted.

Yes I was also impressed. But in making the point, the poster surely went overboard - Mahabarata (I just read about it on Wikipedia) is the "longest poem ever written", ten times as long as the combined Iliad and Odyssey, and at 1.8 million words that is going to be hard to fit into 1.5 megabytes even by itself - unless it is massively redundant I don't see how you can do it. The entropy per word has to be about ~1 b…

And it would also require unicode, so it gets even more harder since you have to go out of ASCII range.

Yes, it would require unicode if I'd include the native language versions. But in this example I meant the english versions I have for personal use - so it's pure ascii markdown. Except for the greek I don't understand arabic, hebrew, sanskrit, pali or the gurmuki script.
Post reply on HN