Come to think of it, a
special pager allows for rapid*, irreversible action to finalise existence... excellent for protecting SaSu from any investigation (can't seize my devices if a few wireless pagers get their special command, can't interrogate me either) in the event something tries to compromise me.
* Can be mere seconds, just open mouth, insert pager, keeping smartphone near, and send the goodbye code. For example "GB1" (or similar secret code) will make the home pagers destroy the devices at home, and after 100ms destroy itself.