This may actually be a very good idea for some cases.<p>If the stuff being protected by the key is, for example, the type of data that someone would otherwise keep in a personal fire-safe, then simply printing out the keys and keeping them in that fire-safe wouldn&#x27;t change the type of security being provided.<p>It might be nice if we had some type of highly-reliable (like the redundancy in QR codes[1]), so the process of printing out a key <i>and re-scanning it</i> was easy and trustworthy.<p>[1] <a href="http:&#x2F;&#x2F;datagenetics.com&#x2F;blog&#x2F;november12013&#x2F;index.html" rel="nofollow">http:&#x2F;&#x2F;datagenetics.com&#x2F;blog&#x2F;november12013&#x2F;index.html</a>