cctv + tag me!

I am still going on with two projects
cctv - project
I've been first contacting the city guys. Due to privacy issues,  they don't want to give me any video material. But the Finnish Personal Data Act gives me a right to access data of myself. So I am holding on that and have contacted the
Protection Ombudsman and Amnesty International Finland to ask how I can get the information.
But there are 2 other ways I see as well:
a) making people view the scenes the cameras see - I was actually thinking if I could put something like a curtain inside the railway bridge and then there would be little lots people can start observing the scene on the other side.
b) would be more work but same fun: what if you projected the people watching at the video back to the space? wouldn't be possible but I could fake the idea by producing a maybe 5 min video of a fat sleeping guy in such a video room…?

tag me! - project
The idea is now to put different furniture in the city space. The furniture should then be tagged. The purpose might simply be to show people how much fun tagging is. To ordinary people.
Arising questions:
where? - not decided (but am thinking of different places)
what kind of furniture? - no idea… maybe just what I can get for free?
How to make sure that people understand this is made to be tagged? - instead of spraying them in one color I started thinking about a papier mache technique(http://tigress.com/nifelan/s/pappmache_s.jpg ; in my opinion it might inspire people and doesn't look so clean). But then I'll need to ask the question what are the newspapers about?