How is Digital Surveillance affecting American Culture?

1)By 2010 50% of people will have a Digital Video Recorder.
2)Most people are video taped without even knowing it.
3)Digital Video has helped slove many crimes.
4)Can be processed and edited on an NLE.
5)They're many 24 hour Digital Surveillance cameras in many cities.
6)Some people believe that Digital Surveillance is invading their privicy
7)

When did people start using Digital Surveillance?
Who first thought of the idea of using Digital Video for Surveillance?
How many crimes are solved using Digital Surveillance?
How much does american culture depend on Digital Surveillance?