My wife and I are there right now. We opened the minibar last night to put a piece of pizza in there in a pizza box. This morning, there’s a $26.04 charge for food on the bill slid under our door. Why? My wife just called to ask and was told, “If you open the mini bar door, there’s a sensor in there and if you move anything in there… you get billed for it.” In our case, we must have jiggled a $20 bottle of wine.
hotel bills

Don't Even Look At Your Hotel Room's Minibar Or You Might Get Charged
By cwalters 10.7.08