Thanks for you comment. As someone using computers for more than 30 years I can tell when my screen is being monitorized (I think a snapshot is being taken ever

Thanks for you comment. As someone using computers for more than 30 years I can tell when my screen is being monitorized (I think a snapshot is being taken every 5 minutes or so). Anyway I don't have a formal proof and I see that my comment can be read as a tinfold guy.