![Dynoscanner](https://cdn.statically.io/img/static.wikia.nocookie.net/memoryalpha/images/4/41/Dynoscanner.jpg/revision/latest/scale-to-width-down/180?cb=20100701171822&path-prefix=en)
Chekov and Captain Clark Terrell survey a dynoscanner display
A dynoscanner was a sensor device used to detect low-level molecular activity.
In 2285, while scanning Ceti Alpha V in conjunction with Project Genesis, the USS Reliant detected a minor energy flux reading on one of the ship's dynoscanners, leading the crew to believe that the scanner was out of adjustment, that it contained life, or that a particle of preanimate matter was caught in the matrix. (Star Trek II: The Wrath of Khan)
While attempting to pinpoint a chlorinide leak in the cargo bay of the USS Enterprise-D in 2368, Geordi La Forge suggested the use of a dynoscanner, rather than a tricorder, because the tricorder was not picking up what it was they were seeking. (TNG: "Ethics")