In the science fiction book "Illegal Aliens," the species that essentially functions as space police have neuropathic anrnaments: telepathic guns. The primary one is the STOP THAT cannon or gun, which via an overwhelming psychic command, makes everyone just stop what they're doing, whatever they happen to be doing. A rarer form, generally issued to the unfortunate member of the species designated to talk to the data-gatherers from galactic society ( because, no matter how alien and inhuman things get, talking to reporters is the bane of a copper's day ) is the SHUT UP pistol, which makes the being hit stop mid-word, and stand there, blinking stupidly.
Just thought that would be topical. The book is essential for anyone tired of the standard First Contact trope.