home security hidden cameras What math do they use and how does it work?I have 2 quetions what math do they use to put a hidden picture or information in a picture like a Jpg ? And how does this work?And what math or software do they use to make picture bigger or make it clear.Th... 06-01-2010 by SeptL Tags camera,cameras,home,home, cameras,security,video, hidden, security
