1. A method of operating a touch-sensing surface, the method comprising: determining a presence of at least one conductive object proximate to the touch-sensing surface by performing a search measurement of a first set of sensor elements of the touch-sensing surface; and in response to determining the presence of the at least one conductive object, determining a location of the at least one conductive object by performing a tracking measurement of a second set of sensor elements of the touch-sensing surface.