A TrackPoint you control with your feet exists and the reason why is unexpected
www.windowscentral.com/hardware/laptops/thinkpad-trackpoint-custom-footrack-projectA Reddit user, Gitman_87, has created a custom controller called “FooTrack” using a ThinkPad’s TrackPoint system. The project, still in development, aims to provide an affordable and precise alternative for adaptive gaming and potentially programming. The FooTrack utilizes a Raspberry Pi Zero and a custom Wi-Fi UDP script for smooth cursor control.