Editing 1st Marine Expeditionary Force (section)

===Devices===
Over the centuries numerous devices have been designed to overcome some limitations of transporters, and still others to intentionally interfere with transporters.  


By the 24th century, usage of pattern enhancers was common aboard most Starfleet vessels, most often deployed to a planet's surface during emergency situations where transport was critical.  

Devices that were specifically designed to block transporter signals or to interfere with them were usually deployed under hostile conditions, thus making use of a transporter impossible or very dangerous and hampering maneuverability of personnel or material. Some of these devices were:
*Transporter scrambler
*Transport inhibitor
*Remat detonator
*Scattering field

In 2375, Vedek Fala, gave a small crystal to Colonel Kira Nerys as a gift.  The device, of unknown origin and design, was actually a homing transporter tag, which instantly transported her to Empok Nor several light years distant. (DS9|Covenant)

Also, in 2293, Spock used a viridium patch to locate and lock on to Captain James T. Kirk and Dr. Leonard McCoy on Rura Penthe.  While not a transporter device, it was used to locate the subject with the transporter. (Star Trek VI: The Undiscovered Country)