In certain areas, if a drone flies into them, may cause danger to people or facilities within the area. In such areas no-fly zones need to be implemented and enforced. A no-fly zone can be indicated or identified by specially transmitted radio signals in or around the no-fly zone. No-fly zones can also be defined using geo-fence data that is provided to a drone. Once a drone detects itself within a no-fly zone, will disable the control from its original operator or from its pre-programmed flying plan at least in part, and be made harmless.