An electronic device, and associated method, provided with a circuit board with a set of input contacts, a set of output contacts and an electrical circuit connected between the input contacts and the output contacts, and a controller. The method includes steps of:bringing a cell into contact with a culture medium containing chlorpromazine; separating the culture medium from the cell so as to remove the culture medium; and incubating the cell using a culture medium which does not contain chlorpromazine to express the mouse olfactory receptor Olfr15 on the cell membrane. In some embodiments, the method may include determining dimensions of a second container, portal, or path in which an instance of the item is handled and updating the estimated item dimensions dependent on the dimensions of the second container, portal, or path. The display is under the control of the central processing unit.