And watch this[0] entire (super entertaining) talk from Hope X about elevator security. You get a pretty good feal for how the safety measures work after watching it.<p>[0] <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ZUvGfuLlZus" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ZUvGfuLlZus</a>