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"ComScan has detected an energy field protecting an area around the sixth planet of the Hoth system. The field is strong enough to deflect any bombardment."
Maximillian Veers, to Darth Vader[src]

Comm/scan, also known as ComScan or Com-scan, was a form of sensor technology used to detect energy readings and approaching starships. Both the Galactic Empire and the Alliance to Restore the Republic as well as their respective successors, the First Order and the Resistance, made use of comm/scan technology.


"Comm/scan reports three Resurgent-class Star Destroyers and a larger capital ship. Unknown class, Dreadnought-sized. Preliminary estimated length seven thousand five hundred meters."
PZ-4CO, to Kaydel Ko Connix[src]

The Galactic Empire utilized ComScan technology to detect the deflector shield protecting Echo Base on Hoth prior to the Battle of Hoth.[1]

The Alliance to Restore the Republic utilized comm/scan technology on Endor. Shortly following the Battle of Endor, Hera Syndulla learnt that comm/scan detected a pair of surviving Imperial TIE Fighters heading to attack the Ewok village, and so took the Ghost to intercept them.[2]

The Resistance had comm/scan technology on D'Qar, using it to determine the quantity and size of starships comprising the First Order's attack force during the evacuation of D'Qar. The First Order later used comm/scan to home in on the signatures of emissions given off by fleeing U-55 orbital loadlifters attempting to reach Crait, and gunners were able to shoot down several of the escaping craft.[3]


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