A system for barrier proximity detection, comprising a short-range detection sensor, a barrier proximity detection system controller, and an operator display and control. 0 mm and a value K1 relating to peak intensity ratio andor a value K2 relating to diffraction intensity ratio as defined herein. Preferably, the device includes a central part having two comparably rigid carrier elements connected to each other via an elastic element arranged therebetween, the rigid carrier elements each including a guide track that can be arranged in the seatback frame to provide the vertical adjustment. The strength of the signal is determined and a location of the lost mobile device is communicated to a user based on the strength of the signal. Outer ferroelectric material is elevationally outward of the inner conductive material and extends along the channel top. The coupling of the drive lead to the motor lead is prevented responsive to a temperature of the braking load exceeding a predetermined disable set point.