The easiest and most convenient way to make sure that you are not being recorded while you are talking to someone. If you are someone who has your smartphone in your hands, then you should know that it is a good idea to have a look at your device's camera and make sure that there is not a single person or object that is inside the frame. 

So what is the solution? Well, the easiest solution is to use a good camera-monitoring app. There are lots of good ones out there, and they all work in the same way. The best thing is that they are free.