Image by MarkPritchard
Security camera at the Cingular cellphone store on Fremont and Market Streets in downtown San Francisco, 30 Oct 06. They had several others but this is the only picture that came out clearly.
A few nice security and surveillance images I found:
security and surveillance 
Image by brianjmatis
I guess it makes sense to have a lot of security cameras at an electrical substation.
Year 3, Day 283
[Total Consecutive Days: 1013]
Dallas spends 20 million dollars a year on school security and surveillance
Image by bbcworldservice
The Documentary on the BBC World Service, April 10th 2012 – School to Prison Pipeline.
Hundreds of schools across America have their own police forces. Armed officers patrol corridors and playgrounds to keep order and protect teachers from the violent behaviour of some children. But there’s increasing evidence that their presence is being used to deal with minor misdemeanours in the classroom. In the past these would have been dealt with by a telling off from the teacher; nowadays it can mean arrest and a criminal record for children as young as twelve years old. Nina Robinson reports from Texas on how the heavy hand of the law in some US schools in criminalising the very young.
Question by Mian H: Home Security Plastic Stickers are stuck on my glass door. How can I remove them without damaging the glass?
I have some “HOME SECURITY” Plastic stickers stuck on my glass doors and windows. I want to remove them. But they don’t peal out. Scraping also does not work. The glue on them is much too stubborn. Is there any chemical or solvent that will remove them safely without damaging the glass.
Answer by New Nana Any type of spray oil. It practically disolves the glue. (Cooking oil) (WD 40)