Sony recently filed a patent application for temperature changing material to potentially use in PS5 controllers.
DualSense Archives - Gameranx
Sony patents temperature control sensors that could feature in the next DualSense controllers
Sony Patents Spherical Controller
Sony patents temperature feedback games controller
Sony patent new controller design
Sony files patent that turns a PS5 controller into an earbuds charging case
Sony Patent Suggests DualSense Could Get Hot And Cold To Reflect Gameplay
Sony Patents New PS5 DualSense Controller, uncharted pc dualsense
New PlayStation Controller Could Change Temperature
Sony files patent that turns a PS5 controller into an earbuds charging case
PS5: Sony will revolutionize the DualSense with this new innovation