Re:Deep underwater, submariners are likely unaware of pandemic
by PoachedSausage on Monday March 30, 2020 @04:02PM
(#22731730)
They could be cryptographically signed as the BBC Radio 4 LW carrier is phase modulated with a datastream that can be used for remotely controlling electrical equipment [0].
[0] https://en.wikipedia.org/wiki/Radio_teleswitch