Jesus christ what the hell. This is the worst thing a parent can do and when I saw u can hear what ur child hears, I was in awe. This is psychotic and I can see how someone can use this as a stalking tool. If you are worried about ur kids, have a discussion about what they are doing or if they are going through anything. Don't resort to spying on what they do. Ur kids trust u more than anyone so why can't u trust them.