1. An arrangement for classifying an occupying item in a seat, comprising: at least one force sensor arranged to measure the force applied to the seat at time intervals; and a processor coupled to said at least one force sensor for receiving the force measurements from said at least one force sensor, said processor being arranged to analyze the force measurements from said at least one force sensor over time to discern patterns in the force measurements and analyze any discerned pattern to determine if it approximates a known pattern indicative of an animate object or an inanimate object.