This article is from the Star Trek Tech FAQ, by Joshua Bell inexorabletash@hotmail.com with numerous contributions by others.
Transporter Scramblers: (from "Nor the Battle to the Strong" [DS9] &
"The Darkness and the Light" [DS9])
Transporter Scramblers are electronic countermeasures that prohibit
transporter activity in a given area. There are no known ways to
overcome the scrambler, except through sabotage. Small scramblers can
protect a few rooms of a ship or station, while larger arrays can
block an entire planet. They are a standard part of Klingon ground
assaults and are used in the protection of certain spaces of DS9.
Remat Detonators: (from "The Darkness and the Light" [DS9])
Remat Detonators are a Romulan weapon, probably invented by the Tal
Shiar, that destroys a transporter pattern during rematerialization.
They are very small, only 2 cubic millimeters, and are hidden on the
person of the victim. Remat detonators are currently available on the
black market as assassination weapons. They are also undetectable to
most scans.
Thanks to Joseph M. Osborne for these summaries.
 
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