SteamVR Unity Plugin v1.2.3 [deprecated]
This is the old version of the SteamVR Unity Plugin. Released Jan 10, 2018. It uses the old style of input with button ids instead of SteamVR Input's actions and action sets. We recommend you upgrade to the new SteamVR Input System with the SteamVR Unity Plugin version 2.0 https://assetstore.unity.com/packages/templates/systems/steamvr-plugin-32647