Press the button discreetly tucked away at the back of our indigenous friend. In a flash, they whip out their cloth and expose the flame, causing the light to spark. It's like a secret code that only you and your colleagues know! But fear not, when the button is released, the light springs back to life, shining bright and ready to transmit your hidden messages. Through the careful manipulation of flame intensity, duration, and frequency, he taught his people how to convey specific messages.
