Star Wars has finally revealed how the Sith Wayfinder in Star Wars: The Rise of Skywalker really works. The Sith Wayfinder was essentially the MacGuffin of Star Wars: The Rise of Skywalker, a mysterious ancient Sith relic that could be plugged into a navicomputer to guide a ship to the ancient Sith redoubt of Exegol. Star Wars has gradually been revealing just how this works, with Justina Ireland's novel A Test of Courage touching on a forgotten Force power called wayfinding – one that allows a Force-sensitive to focus on some vergence in the Force, and direct themselves toward it. Now, though, the full details have been fleshed out in the most unexpected way.

https://screenrant.com/star-wars-how-rise-of-skywalker-sith-wayfinder-works/