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A sensor was one of any of a range of complex devices that enhanced something's ability to receive data about its environment.
All starships carried sensors, as did most vehicles and droids. Depending on the sensor, they could detect and analyze many forms of data, such as electromagnetic radiation, sound and vibration, gravity, nuclear radiation, magnetic fields, heat, pressure, trace chemicals, or the emissions of other sensors.
Sensors were, of course, not perfect. Not only could they fail to detect what they should or present false "ghost" images, they could be interfered with by natural phenomena like solar radiation, hydrogen clouds, asteroid fields, and potent gravity wells; and by artificial phenomena such as sensor jammers, sensor decoys, shield camouflage, stealth technology, and, of course, cloaking devices.
- Aural sensors
- Crystal gravfield traps
- Dedicated energy receptors
- Electro photo receptors
- Full-spectrum transceivers
- Geiger counters
- Hyperwave signal interceptors
- Life form indicators
- Sonic imprint sensors
- Heat-pit sensors