The device became first known to Stargate Command during a meeting with the Tok'ra. There Major Thomas Graham pulls out such a device to kill the Supreme High Councilor Per'sus of the Tok'ra but fails and subsequently kills himself. Another such device is later used by Martouf to kill the President of the United States but he is also stopped. (SG1: "Divide and Conquer") Another such weapon is used by Osiris about three years later in her fight against SG-1. However, this model could be taken off and had no self-destruct mechanism. (SG1: "Chimera")