YouTuber Everything Is Hacked is a computer programmer with interests in writing code under difficult circumstances and making working from home more practical. In the past, he created an interface for controlling a computer using facial movements and having Zoom put virtual pants on him for those times when he's forgotten to wear them.
Now he's radically departing from that sedentary lifestyle for energetic, full-body workouts. He's adapted flag semaphore into a computer interface that will let him type, program, and even control video games with body movements.
This video is a special treat and not just because Everything Is Hacked is smart and innovative technically. It's genuinely funny throughout as he tries to spell out the words for songs as he plays them.
-via Laughing Squid