Security Engineering

I plan on doing research about security engineering, though I haven't quite narrowed my focus as of yet. I want to research the latest physical security innovations, such as facial recognition cameras in Great Britain or the airport security mechanisms in place today. I'd like to know more about the scope of the security engineering field and what is required of security engineers on a day to day basis. It has always been interesting to me the security applications in place that no one notices. Barricades outside of malls or large corporations disguised as large decorative flower pots or hidden security cameras used for surveillance. Some of these issues are controversial, and I may want to delve into the stances that many have for or against using these new technologies. Finding information about this topic seems to be very specific and it is difficult to find a lot of new, quality sources. However, I do want to pursue this field after graduating, so I think I'm up to the challenge of finding more information on the topic.