Interesting idea, but it fails to take user stupidity into account. &quot;00000000&quot;[1] in a capsule in a volunteer&#x27;s body does not really protect anything.<p>[1] <a href="http:&#x2F;&#x2F;arstechnica.com&#x2F;tech-policy&#x2F;2013&#x2F;12&#x2F;launch-code-for-us-nukes-was-00000000-for-20-years&#x2F;" rel="nofollow">http:&#x2F;&#x2F;arstechnica.com&#x2F;tech-policy&#x2F;2013&#x2F;12&#x2F;launch-code-for-u...</a>