Sam: Many shuls have videos recording 24 hours on Shabbos. In NY, including in many frum neighborhoods, there are 24/7 videocameras all over the streets. Many homes have CCTV. On previous discussions various sources were cited permitting walking in an area that is being video recorded.
http://www.theyeshivaworld.com/coffeeroom/topic/cctv-on-shabbos