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"You're sure the homing beacon is secure aboard their ship? I'm taking an awful risk, Vader. This had better work."
Grand Moff Wilhuff Tarkin[src]

The XX-23 homing beacon was an s-thread tracking device produced by Neuro-Saav Technologies and used during the Galactic Civil War.

The XX-23 was a small cylinder that broadcast a continuous signal that could be received by HoloNet s-threads. A dedicated computer would then be able to determine when the ship crossed an s-thread and plot its course with this information.

It could be attached to the hull of a ship via a molecular bonding agent. It would use a ship's heat and radiation emissions to power itself, making it more difficult to detect than other trackers.[1]

The homing device planted onboard Millennium Falcon by a HMOR homing droid was a variant of the XX-23 design.



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