https://wccftech.com/steam-deck-can-be-used-as-a-controller-for-your-pc-via-remote-play/

Valve has published an updated Steam Deck FAQ on the official website, answering quite a few questions that we all had about the upcoming handheld gaming PC.

To begin with, we got confirmation that the Steam Deck can indeed be used as a controller for your PC games via Remote Play functionality. Given how fully featured and customizable the controller looks like with its capacitive thumbsticks, trackpads, and additional rear buttons (not to mention the gyroscope and haptic feedback), it's great news indeed. A while ago, Valve even demonstrated the controller's unique trackpad and gyroscope controls combination.