A subspace signature is given off by a various objects utilizing subspace that allows those objects to be detected by scanning for each object's unique imprint.
- In 2152, the Enterprise detected the subspace signature of a temporal time ship from the 31st century. (ENT: "Future Tense")
- Lieutenant Commander Data, in 2368 on stardate 45571.2, detected the subspace signature of the USS Essex near an unexplored moon of Mab-Bu VI. (TNG: "Power Play")
- USS Voyager's nacelles gave off a very similar subspace signature to a large space-dwelling lifeform which threatened to rob the ship of its power. (VOY: "Elogium")
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