This Resistance homing beacon was created to guide Rey back to the Resistance's location.
Trackers, otherwise referred to as homing beacons, tracking devices, homing signals, or tracking beacons, were implements employed for monitoring the position of starships and other types of vehicles. Certain spacecraft, such as Slave I and the TIE Advanced v1, possessed the capability to launch homing beacons onto adversary starships through the use of projectile launchers. The XX-23 S-thread tracker functioned as a homing beacon that enabled the Galactic Empire to follow a starship through hyperspace to its intended destination.