[nzlug] computer read/write access to paper?

[Phillip Hutchings]

On 6/22/07, Karl. <kmw1 at free.net.nz> wrote:
> Every now and then there are small files (encryption keyfiles) that I'd
> like to store in some robust offline fashion.  I have a vague
> recollection of software to print out a file as a 2D barcode, and then
> something to read it back from a scan of the page.  Anyone here got any
> pointers on how to do this?

Actually, that's a very good idea. I've been trying to think of a
secure method of keeping an encryption key off disk for a while now.
I'd been thinking of a removable USB drive, but even that can be read
from after erasure. Now I'm thinking of a 2D barcode and a webcam,
that could work...

-- 
Phillip Hutchings
http://www.sitharus.com/