I remember when cell phones with camera's just came out. Some guy exposed himself to this lady getting into her car. She pulled out her phone and took a picture. The guy drove away and she took another picture of his car. This was in the morning and she called police, BUT she also called channel two news and at on the noon news they were showing the guy who is a retired school principal, they did block out the area were his privates were. Poor guy having his face and other parts all over the news.
Bottom line is you want something private, don't do it in public. Heck even in private there might be a camera.