Unity package. Fully cross-platform TV remote input.
Make sure you have the standalone Git installed. Reboot after installation.
In Unity, open "Window" -> "Package Manager".
Click the "+" sign at the top left corner -> "Add package from git URL..."
Paste this: https://github.com/forcepusher/com.bananaparty.input.tvremote.git#1.0.0
See the minimum required Unity version in the package.json file.
To update the package, simply add it again using a different version tag.
Also see the Development Repo if you want to modify this package.