OMG you guys are awesome!
Im going to call this project GOM (grumpy old man!) I will be researching all of this and working on it this week. I promise to reply with any results good or bad.
Digip - I already use webcams with motion detection in a specific area, but it would be cool to trigger the cameras based on wifi signals on top of motion detection.
Ironically my neighbor right in front of my house had his truck broken into last Saturday. They took a bunch of stuff. It had only been parked for 20min or so. My cameras would have captured an image, but his truck was not in my motion zones. The worst part was that they broke a window and scratched his paint too.
My hope is that if it is the same people then eventually I will be able to identify them by MAC and any time they pass by my cameras will go off and I will get sms or email etc.