There is a balance between privacy and crime reduction already codified into law and common law. See: the use of snoopers and other IR devices to look for grow

There is a balance between privacy and crime reduction already codified into law and common law. See: the use of snoopers and other IR devices to look for grow houses (generally accepted as unreasonable) and the use of airborne BAC sensors to look for drunk drivers (generally accepted as reasonable) Legal decisions are about balance between individual rights and group rights. Free speech vs "fire in a crowded theater" is a classic example of this balancing act.