/lib/udev/keymaps/force-release/hp-other is in udev 175-7.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | # list of scancodes (hex or decimal), optional comment
0xd8 # Touchpad off
0xd9 # Touchpad on
|