Tesla seeks approval for sensor that could detect children left in hot cars

Tesla asked the Federal Communications Commission (FCC) for approval to market a short-range interactive motion-sensing device that could help prevent children from being left behind in hot cars and boost theft-prevention systems.

The California automaker wants permission to use unlicensed millimeter-wave sensors that would operate at higher power levels than allowed under existing rules.

The FCC is seeking public comment on Tesla's request through Sept. 21.