We bought a set of security cameras for our condo complex after having some problems with people driving into the garage door (seriously, they drove into the door when it was going down) and ended up getting a couple more sets to set up in other parts of the building. They're ok, but you're going to have to spend more than we did ($400 for a set of 4 cameras and a dvr iirc) if you want to be able to identify someone. It's not that easy to identify people we know with our set, closing the garage door would be a lot easier and more effective.