Are teachers legally allowed to take pictures of students on their mobile phones?
I think *Byakuya* is right, the laws would be the same as for a normal camera. “Legally allowed” would depend if you were on school property. Whether you were nude or clothed (assuming you are a minor) Whether you were in the showers or toilets ( you don’t say how you were being naughty) And whether he was infringing your privacy. It might also be pertinent if he is attempting to blackmail you. And whether you were engaged in criminal behaviour Or simply naughty prank. Finally it would depend on Privacy Laws in the Country/State where this occurred. Laws that provide for Surveillance Cameras are different to personal cameras. So without specific details if would not be possible to answer your question. M.