In one aspect there is provided a medical navigation system, comprising a computing device having a processor coupled to a memory, a tracking camera for tracking medical instruments, and a display for displaying an image. Tracked medical instruments may have attached thereto an indicator device having a visual indicator. The indicator device is positioned in view of a user during the medical procedure, and is configured to receive, from the medical navigation system, data indicating a quality of the tracking of the one or more instruments, and to display, using the visual indicator, the data indicating the quality of the tracking.