If you notice ML using phone while you're naked, be careful they might be taking ur photos while performing compromised acts on you. Not sure why but there can be multiple reasons for them to do so. Furthermore when you sign in, they might have you IC too so just be careful! Especially those who are attached or married.
I used to encounter one lady who took photo of my back ,she claim is to show the evidence of massage to her boss but I ask her to erase in front of me.
Saw on one of those video, the guy flim the ML inadvertently caught her taking photos of him.