Japan has a culture that encourages overtime out of a sense of loyalty, and that's a serious problem. It not only cuts into family and social life, it leads to entirely avoidable deaths. Taisei (the company behind the main Tokyo 2020 Olympic stadium) aims to fix that in an unusual way: having a drone nag you into going home. Its newly unveiled T-Frend is ostensibly a security drone that surveils the office with its camera, but its specialty is blasting workers with "Auld Lang Syne" (commonly used in Japan to indicate closing time) to force them out of the office. In theory, the music and the drone's own buzzing make it impossible to concentrate.