Success

I finally got the Spot and PC configured and in the floor.  PC was so slow to install but its configured and now running a recording program. More importantly it is suppling the Spot with power (most expensive power supply ever). I'm going to leave this recording while I work on getting the visualisation working.

I'm hoping PC will continue to work with lid shut (I've configured it this way but its a PC who knows). 

I was trying to explain what I was doing to Jeff when I realised my big mistake. If I am trying to persuade people to do something I should be trying to get people to not walk down the corridor chatting on the ground floor and use the other route instead. Eva pointed out this would make a much better paper (doing diffrent  2 experiments not just one).  The technology would have to count people going via the atrium vs those talking while walking through the work space to the meeting room. I think I could measure people with IR monitor and microphone then look for people + noise. This looks moderately simple.  Will think about this when I get back.