I've thought of that but it may piss me off more to watch a video of them doing it. Don't have time to just sit and watch the monitor...much less a monitor aimed 20 feet from me.
There is the rare time that they get an ID off the video, but more often than not I hear about people who either have video that they can't make anything out on or don't recognize the person anyways.
No monitor to watch, small camera writes to a memory chip constantly, overwrites itself about every other day, only need to view it if something happens.
You'd be surprised at the quality these days.
I use one in my car everyday, It's a Asian or Russian thing to be honest, they use it to prove who is at fault if in accident. (no, I'm not Asian)
Almost any camera would give you a running start?
We have a ranch that I've been trying to figure out how to install one and upload data to a wireless disk someplace. Someone actually stole a complete cast iron cook stove out of a relatives house, like 8' x 6' and maybe a thousand pounds.
So much trash around, if I caught them I'd be hard pressed not to pop them!
Here's a link to my camera, it's pretty cool. Videos at the bottom of site.
http://www.finevu.net/newcr500hd.htm