Tricorder

Memory Beta, the wiki for licensed Star Trek content.

A tricorder was an all-purpose hand-held scanner, capable of detecting and locating anything from viruses in a body to a subspace anomaly.

There were three types of tricorders each designed for a specific purpose, the science tricorder, the medical tricorder, and the security tricorder. (RPG reference: Star Trek: The Next Generation Officer's Manual)

Tricorders could pick up communications which could be listened to via an earpiece attachment. (DS9 novel: Devil in the Sky)

[edit] External link

• Tricorder article at Memory Alpha, the wiki for canon Star Trek.