I actually have the same problem. I know a person that used to watch me with no having idea and he may do it now as well. He's into the spirit round from very young age, in the age of 24 he is, it seems fairly easy for him to AP, so Rikki someone wouldn't necessary take all this effort to watch but if this someone is advanged and can do it easily, they may do so.
I don't even know if he still does or why, but I want this to stop. Scryingchild I asked my spirit guides to get any projector out if they come, anytime and not stop until I tell them. Later I thanked them. Technically they can do it because they're more powerful than the projector, I don't know though if it can be done.