A movable boundary detection apparatus is provided. The apparatus includes a receiver operable to receive a positioning signal including actual position coordinates of a movable device in a first space and a memory module including a memory to store predefined position coordinates for defining boundaries of a second space being located within the first space. A processor module is communicatively coupled to the receiver and the memory module and operable to compare the actual position coordinates to the predefined position coordinates. An indicator is communicatively coupled to the processor module and operable to indicate when the actual position coordinates are outside the predefined position coordinates for indicating that the device is outside the second space.