I have been experimenting with a pattern I call Thumb Chord that consists of pressing a thumb key (the space-bar on a standard keyboard) and a home row key ( A to ; on an QWERTY keyboard) simultaneously to form a chord which outputs a modifier, like shift or control. Here is a minimal layout definition, based on keyd's configuration format, to illustrate the pattern: [ids] * [main] d+ space = oneshot(shift) k+ space = oneshot(shift) When combine...