My father was an electrician. I never was formally trained however I dabbled. Any speaker can be reversed to being a microphone. Anything you look at electrically (A tv, computer monitor smart phone) can watch you back. A program for computers can write subliminal messages to anyone watching tv all the way to your cellphone. Through constant involvement with these devises your sub conscience could be trained in a different language to bring to reality a Manchurian Candidate scenario when fully triggered that the individual wouldn't be aware that they were programed or used in this way. What do you think?