Patent ID: 8229802

Claim:
A method carried out in a stock monitoring system, comprising: providing a stock monitoring system including: a housing, one or more doors disposed in or on the housing, a sensor for sensing the condition of the door(s) and providing a door closed signal indicative of the door(s) having been closed by a user; one or more containers for stock items, located within the housing, the or each container having associated therewith a weight sensor for providing a weight signal indicative of the current weight of the container, and control circuitry, coupled for communication with the weight sensor(s); receiving a door closed signal; receiving one or more weight signals; determining, for the at least one of the one or more container, the number of stock items removed from the container(s) by the user, from the weight signal(s) occurring during a predetermined sensing period, the predetermined sensing period being dependent upon the door closed signal, wherein the predetermined sensing period comprises a first predetermined time period after the door closed signal.