Since the late 1990s, "analog sticks" (or "thumbsticks", due to their being controlled by one's thumbs) have become standard on controllers for video game consoles, popularized by Nintendo's Nintendo 64 controller, and have the ability to indicate the stick's displacement from its neutral position. This means that the software does not have to keep track of the position or estimate the speed at which the controls are moved. These devices usually use potentiometers to determine the position of the stick, though some newer models instead use a Hall effect sensor for greater reliability and reduced size.