cradle
Names: cradledead-man's switch
First appears in Book 2: The Dark Forest, chapter 6 (Year 20, Crisis Era)
Appearances
B1
B2
B3
What you know
Book 2: The Dark Forest
- Ch 6Sends a continuous signal; if the signal is interrupted, the receiving system triggers. It monitors heartbeat, blood pressure, temperature and responds to voice commands.
- Ch 6Rey Diaz designed it with multi-unit nodes spaced about 300 km apart with microsecond monitoring to defeat spoofing by humans, though sophons detect its encryption.