I probably use my camera app the most, but of course that came with the phone.As far as downloaded apps, my most used app is Google Voice.

We use our phones as a camera. 

He said we had ten charges of trespassing (a number I assume he thought sounded cool) because he caught us on his cameras and he prays to God that I don't come up there again.

And thankfully, Jeff Watson (an Ohio attorney), actually sat down with the Ohio Department of Commerce Division of Real Estate to understand their enforcement rules on camera. 

The only way to be absolutely certain is to install a camera system that operates with it, which costs tens of thousands of dollars.

Also, just to mention, crime has gone down 20%-35% in the past 2-3 years alone within the  target area, and cameras have been installed to encourage and maintain public safety as we begin to experience a more walkable, enjoyable Atlanta metroIn saying all of this, it may be time to start checking out those other areas within the South Atlanta metro that have been neglected/avoided for so long.

The bad news is that you can't see behind walls, but maybe with an infrared camera you can do that 1/3 of the way.