Houdini

"Houdinis" were a type of subspace anti-personnel mines used by the Dominion during the Dominion War.

The nickname "Houdini" was given to the devices by Starfleet troops on AR-558 because they hide in subspace and appear at random. The mines were a effective psychological weapon, because there was no way to predict when or where they appear.

In 2375, Kellin and Ezri Dax found a way to modify a tricorder to detect the Houdinis on AR-558. Captain Benjamin Sisko ordered the mines moved to a nearby ravine and reprogrammed to respond to movement. The mines eliminated a significant portion of an approaching Jem'Hadar column. (DS9: "The Siege of AR-558")