A method for operating a Hall sensor device that includes a Hall effect region and a plurality of electrical contact regions configured to provide electrical signals to and from the Hall effect region using a plurality of control terminals is provided. Each electrical contact region is formed in a respective well that adjoins the Hall effect region, and each control terminal is configured to control a conductance in an associated well. The method includes selectively applying control signals to a first subset of the plurality of control terminals to form channels conducting majority carriers of a first conductivity type in the associated wells during a first operating phase; and selectively applying control signals to a different second subset of the plurality of control terminals to form channels conducting majority carriers of the first conductivity type in the associated wells during a second operating phase.