Encephalographic polygraph scan

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A verifier, often used in 23rd Century Starfleet legal forums, was an example of a device that uses an encephalographic polygraph scan.

An encephalographic polygraph scan is a 24th century variety of a lie-detector test. Using scans of the subject's brainwave patterns, it was able to detect the truthfulness of statements or responses to questions. As a result, several different versions of these scans were useful during legal proceedings, or for verifying the clearance of particular personnel.

In 2367, Lieutenant Worf wanted Crewman Simon Tarses to undergo such a test and instructed Ensign Kellogg to make arrangements for the scan.