Scanner

Scanners were devices used by many species, such as the Time Lords, humans and the Judoon, to gather information.

Sarah Jane Smith had a scanner watch, which was capable of detecting alien life and identifying the species and its origin. (TV: Invasion of the Bane, Enemy of the Bane)

River Song also had a scanner, which was made by Magpie Electricals and she used to open locked doors (TV: The Impossible Astronaut) and discover that the astronaut suit that her younger self had escaped from was augmented with alien technology. (TV: Day of the Moon)

Other scanners

 * TARDIS scanner
 * The Doctor's sonic screwdriver
 * Bekaran deep-tissue scanner
 * Data scanner
 * Judoon scanner
 * Micromeson scanner
 * Time scanner
 * Genetic scanner
 * Gregor Van Baalen's scanner
 * Holographic scanner
 * Infrared scanner
 * Life scanner
 * Sidelian Brain Scanner
 * Space scanner
 * Temporal scanner
 * Vetlox scanner
 * Zookeeper's scanner