If you are ever held captive by a foreign power and displayed as a hostage on their TV station you can blink in Morse code to tell people what is really happening. Like American hero
$1> Denton is best known from this period of his life for the 1966 televised press conference in which he was forced to participate as an American POW by his North Vietnamese captors. He used the opportunity to send a distress message confirming for the first time to the U.S. Office of Naval Intelligence and Americans that American POWs were being tortured in North Vietnam. He repeatedly blinked his eyes in Morse code during the interview, spelling out "T-O-R-T-U-R-E".
It is also the kind of cool skill young Scouts like to learn so if there is a local troop interested in this you could offer to teach them.