In 2154, Commander Shran noticed that the shield matrix of an attacking Andorian battle cruiser was of a completely unfamiliar configuration. Shran and the crew of Enterprise NX-01 eventually came to realize that the ship was not Andorian at all, but rather a Romulan ship using holographic camouflage. (ENT: "Babel One") In 2377, the Voyager crew was able to tap into the shield matrix of an attacking Lokirrim warship, using a command authorization covertly supplied to the crew by The Doctor, who was being held captive aboard the warship. (VOY: "Body and Soul")