watch 01:51 The Loop (Games) Do you like this video? The psi collar is a type of terran device. Psi collars were used to control the Tamed in the early stages of the project. ReferencesEdit ↑ Maxwell, Matthew. "The Teacher." (Feb. 20, 2013). Blizzard Entertainment. StarCraft Lore: The Teacher Accessed 2013-02-20. Retrieved from "https://starcraft.fandom.com/wiki/Psi_collar?oldid=349974" Categories: Terran Technology Terran security Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.