[chbot] Traffic lights and bluetooth

[Mark Atherton]

Hi Charles,

My concern is aggregation of tiny pieces of (apparently) useless 
information. Add them together, and larger pictures can be revealed.

As one example: start tying number plate and BT MAC address together, 
look up number plate, and you can converge on a persons name. Fill your 
city with bluetooth sniffers, and you can start tracking people. There 
are lots of holes in my example, but it is an example of how apparently 
disparate data can be aggregated.

Haven't seen you at any Robotics meeting recently. Hope things are OK.

Regards,

Mark