Force Tracker

[KRD-26]

Intent: Designed for assassin droids and human interactions droids to find people who use the force.
Manufacturer: Bacta co. Factory in Dorin
Model: Flicker Sight
Affiliation: Produced by Republic for droids
Modularity: Slightly; switchable lenses so auras are different colors.
Production: Minor production
Material: Rim made of Lokstone; a stone that absorbs most weak blaster shots. comes from Coruscant. Lense made of Riss; a transluscent "filter" letting you see the force. similar to glass.
Description: goggles that show all non-force users naturally, and those who can use the force have a blue aura.

 

[Alli Wren]

http://starwars.wikia.com/wiki/Force-detecting_chip

This is pretty much the same thing I feel and great for droids...

 

[Jsc]

Goggles that you see Force Users. Nope. Uber and exploitable. Denied on intent.

And the above entry on the wiki is a singular, unique device made and destroyed during a single campaign and is not explained well at all.