vehicle and personal tracking system (theft and identification); vehicle security system, namely-- anti-theft systems, car alarm system; electronic device installed on a motor vehicle, carried by a person or installed at a fixed location, which generates a signal (audible, luminous or vibrating) warning of the proximity or origin of another user using the same device; digital or liquid crystal screen which is linked with the aforementioned security device and which indicates the number of users of the device within the perimeter of use of the device
Electrical and Scientific Apparatus