In 2370, Doctor Beverly Crusher used a handheld IP scanner to reveal an infestation of interphasic organisms aboard the USS Enterprise-D. Later, Lieutenant Worf used an IP scanner to inspect the area around the Enterprise in an attempt to find more evidence of the organisms. (TNG: "Phantasms" ) The same prop later appeared as an engineering tool in the episodes "The Next Phase" , "Eye of the Beholder" and "Bloodlines" .