Tribogenics (<a href="http:&#x2F;&#x2F;tribogenics.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;tribogenics.com&#x2F;</a>) turned this discovery in to an actual product. I think they moved from tape to using disks that oscillate to connect and disconnect. (<a href="http:&#x2F;&#x2F;singularityhub.com&#x2F;2013&#x2F;11&#x2F;16&#x2F;southern-california-startup-tribogenics-develops-smart-phone-sized-portable-x-ray-machines&#x2F;" rel="nofollow">http:&#x2F;&#x2F;singularityhub.com&#x2F;2013&#x2F;11&#x2F;16&#x2F;southern-california-sta...</a>)