Footprints are a visual cue in Fortnite that can help players track the location of other players. They are visible for a few seconds after a player has moved, and can be seen through walls and other obstacles. This can be a valuable tool for tracking down enemies or avoiding being ambushed.
To turn on footprints, open the game’s settings menu and navigate to the “Gameplay” tab. Under the “Visualizations” section, you will find the “Footprints” option. Set this option to “On” to enable footprints.