Very interesting, Andydog. That has to give you a great sense of accomplishment when you complete a project like that.
I'm in the information technology field. I'm a Project Manager - managing several contracts involving biometrics, surveillance, smartcards for physical security, US border control, visa/passport processing, etc.
Interestingly, the United Kingdom is far more advanced (and Europe as a whole) compared to the US in the development of these technologies and their applications. Maybe you have been aware of the implementation of surveillance technologies in UK railway locations.
Save to Paddy.