Stealth field generator / Legends Stealth field generators , alternatively known as stealth generators , were special devices typically worn on belts that saw use primarily around the time of the Jedi Civil War and the years following it . Essentially a portable , personal cloaking device , stealth field generators made their users all but invisible at medium and long ranges ; however , a clumsy user could be easily detected in close quarters . Also , unless a master of stealth , the user could not maintain the stealth field while running . History . A stealth field did not completely hide its wearer , although spotting it would require awareness and great attention . The location of a stealthed target could be determined by air oscillations , like those from fire , and the presence of a silhouette . Besides , to remain unnoticed , one had to move slowly and silently . However , skilled users of stealth fields could make themselves hard to spot even for defense turrets , and could even run while stealthed . Some Mandalorian armor designs , such as those worn by scouts , featured stealth field generators built into them . Examples of this could be found among the warriors who served under Mandalore Canderous Ordo in 3951 BBY , on their reclaimed base on the Onderonian moon of Dxun . There were also several advanced versions of the stealth field generator ; some were enhanced with sound - dampening technology to make them more effective at closer ranges . Actions involving sudden outward movement , such as engaging in combat , left the wearer visible ; despite this , using such generators enabled combatants so equipped to engage in devastating sneak attacks . During and after the Jedi Civil War , stealth field generators were primarily used by the Sith Assassin s , as well as by Revan and the Jedi Exile ' s companions . Under Darth Malak ' s Sith Empire , a group of researchers on Korriban developed a special sound dampening stealth field generator , which was later found and used by Revan to enter Marka Ragnos ' tomb while not corrupting the targeting protocols of the assassin droid guarding with excessive audio input . Three hundred years later , Operative s of the resurgent Sith Empire ' s intelligence organization made use of stealth field generators on their missions . Also , certain Bothans were known to use these in the Galactic Civil War . Shadowtrooper s were also known to use these as well . Behind the scenes . The stealth field generator was specifically designed for the two " Knights of the Old Republic " video games . In order to use these devices , characters ( whether controlled by the player or NPC party members ) , had to have paid points into the Stealth skill . Players of any class who put at least one point into the Stealth skill at character creation receive a basic stealth field generator at the beginning of " " , but only the Scoundrel class has the unique Feat of Sneak Attack , which adds bonus damage to attacks made from Stealth Mode . Personal stealth fields appear in various Star Wars video games . Generally they are portrayed by using a frame buffer effect to show the stealthed individual as a three - dimensional transparent distortion in the air . The " Knights of the Old Republic " games , however , provided for video cards unable to use frame buffer effects by instead displaying the individual as normally visible but with a shimmering outline around them .