Examples are disclosed for tracking a location of an input device. One example provides a display device including a logic machine and a storage machine, the storage machine storing instructions executable by the logic machine to generate, based on position sensor data received from a position sensor of an input device, an estimated location of the input device that is repeatedly updated as further position sensor data is received. The instructions are further executable to determine that the input device is in a home state associated with the display device, determine, with a sensing mechanism of the display device, a home-state location of the input device, reset the estimated location based on the home-state location, such that future updates to the estimated location are based on the reset estimated location, and control the display device based at least on the estimated location of the input device.