Does anyone know if I can remotely access a cell phones camera?

I’m trying to keep an eye on my teenager when he says he’s at a friend’s house but I’m not sure. I know there are tracking apps for location, but I can’t find anything that lets me actually see through the phone’s camera without him knowing. Does that even exist, or is it a privacy violation thing?

Remote access to a phone’s camera without consent is generally illegal and violates privacy laws. Don’t try to do it.