1. Telegraph 2013. One surveillance camera for every 11 people in Britain. https://goo.gl/gXFmwN. (2013). Telegraph 2013. One surveillance camera for every 11 people in Britain. https://goo.gl/gXFmwN. (2013).
2. BBC 2006. Britain is Surveillance Society. http://news.bbc.co.uk/2/hi/uk/6108496.stm. (2006). BBC 2006. Britain is Surveillance Society. http://news.bbc.co.uk/2/hi/uk/6108496.stm. (2006).
3. Nest Cam 2013. Nest Cam. https://goo.gl/I85twa. (2013). Nest Cam 2013. Nest Cam. https://goo.gl/I85twa. (2013).
4. Scheduling an active camera to observe people