I was thinking of identifying the player in VR. Typing password on virtual keyboard is not an option. Has anyone implemented other methods to identify players? Better be something no need of extra hardware not coming with VR systems.
Can you please provide a little more context about what you're doing? You can allow the user to self identify within your own app... SteamVR/OpenVR has virtual keyboard options through their APIs/SDKs and there are numerous other keyboard APIs/SDKs you can integrate into your project. Another option (the most common for SteamVR) is to use the Steamworks SDK as your identifier. The Viveport SDK can also be used for this purpose and will see updates in the near future to build upon the existing functionality.