You can now buy a third-party DayDream View controller - Ausdroid
Google on X: "The Daydream controller lets you point, swing and aim. And when you're done, it tucks right back into the headset. #madebygoogle https://t.co/IoTdQfZP5w" / X
Google Just Unveiled Its Slick New VR Gamepad
Unity - Manual: Google VR controllers and input devices
The Controller Emulator (Deprecated) | Google VR | Google for Developers
Amazon.com: Google Daydream View - VR Headset for Smartphone (Slate) : Video Games
How Google's Daydream mobile VR system will work | VentureBeat
Daydream Controller | Google VR | Google for Developers
Interview: "How I hacked the Daydream controller" feat. Matteo Pisani, CTO Remoria VR - YouTube