Seye é um básico keylogger para Linux moldado a partir da lib X11.
https://www.x.org/releases/X11R7.5/doc/libX11/libX11.html
https://stackoverflow.com/questions/55226590/x11-xlib-virtual-keyboard-input-and-keyboard-mapping-synchronization-issue
https://linux.die.net/man/3/xgetmodifiermapping
https://www.x.org/docs/X11/xlib.pdf
https://gist.github.com/Noitidart/0caa18df64884509c4caacfcde79630e