Backup Your Data to Paper

Back of the envelope on storage capacity: - Looks like about 200x200 px grid - 200x200 = 40,000 total possible bits - Assume only 75% of these are available for data due to QR structure and redundancy features - Leaves about 30,000 bits or 3-4 kb capacity in that one image - Comes out to about 5 reams of paper per mb of data storage<p>This would be a better &quot;ping pong balls on a plane&quot; interview question for comp sci candidates.

While I&#x27;m neither an expert in data backup or an archivist I&#x27;m willing to guess that it would highly recommended that anyone using a method such as this to use high quality acid-free archival grade paper to avoid the inevitable ink fade that occurs with lower quality paper types.

I don&#x27;t remember the name, but I&#x27;m pretty sure I saw something like this about twenty years ago, any HNers know what I&#x27;m talking about?

I had this exact idea a few years ago.<p>It was a neat idea, to offline your data to analog format. But, it would require a lot of paper printouts to back up your data.<p>The paper printout might actually last longer than CDROMs.<p>A more interesting idea, would be to encrypt your data, and back it up to the cloud. Then, the printout is just the password-protected key to re-download the data, and decrypt it.

No we just need to Microfilm it - --- also fork it into an MJPEG exporter.