Logitech MX KEYS keyboard backlight responding to hands near the keyboard - Quick Demo - [No Sound] - YouTube
MX Keys Background Lights still Bugged after 2 Years, Logitech just doesnt care! :) : r/LogitechG
Logitech 920-010506 * Minimalist form factor provides improved ergonomics* Perfect Stroke keys are shaped for your fingertips with optimal key stability and tactile responsiveness* Backlit keys light up the moment your hands