A rack-handling system includes a rack-handling device having a rack-coupling portion and one or more handles. The device comprises a matrix of CMOS sensing chips that each comprise a plurality of sensing electrodes arranged in a matrix of columns and rows along horizontal wires and vertical wires. The second algorithm creates a list of all primary words and the third algorithm gives meanings to the primary words by citing examples of said primary words. A pushbutton moves the latch member and a locking assembly blocks the movement of the pushbutton when the lock assembly is locked.