There was a news item on the BBC news website today about some new safety boots that use morse code for signalling purposes!
According to the manufacturers..."The shoes holder can “press” this “button” with his toes to start a sequence (composed of 2 symbols: “short” or “long”, an alphabet derived from MORSE code). This differs from other smart PPE that do not allow interactions with the device without using hands. Right and left vibrating motors, as well as a 90dB buzzer, allow the shoes to communicate with the holder using short and long vibration or beeps too. For instance, this system allows holder to acknowledge when he receives a message to leave immediately an area. Or he can send a “MAY DAY” message to alert his employer or colleagues. To handle extreme situations (such as broken leg), a second external membrane is also available by hand."
Links...
1) BBC News item
2) Manufacturers website
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