Training device for learning Morse Code using your toes.
Though communication is an essential part of human behaviour, the Royal Guard in front of Buckingham Palace is banned from interaction and unsolicited movement. He appears like a robot. I assume he must need to communicate and I imagine him pressing secret buttons in his black boots, imperceptibly transmitting Morse Code. But this precision manoeuvre must be practised beforehand; he uses this training device to learn broadcasting Morse Code with his toes. Two buttons for dit and dah are operated using the toes. A display behind the two-way mirror allows spell-checking and the mirror helps him maintain an unflinching facial expression.