My Tobii Eye Tracker 4C doesn't work with SteamVR.

[Santi-Tetra]

Hi all.
I bought a few days ago a 'Tobii Eye Tracker 4C' device with the illusion of being able to use it with the game 'Project Cars 2'. Looking in different forums, as well as on the official Tobii page, they indicate that I have to enter the game through the 'SteamVR' application.
I've successfully downloaded and installed it on my PC. But when I open it, the message "We welcome you. Connect your VR viewer" (literally translated from Spanish to English) appears and from there I can't get through.
I don't have a VR viewer, only the 'Tobii Eye Tracker 4C' device. I've searched for a solution in Google'but I can't find one.
Therefore, I look to your help with some anguish, to see if you can tell me how I can get SteamVR to identify my 'Tobii Eye Tracker 4C' device and not ask me for a VR viewer.

(I've translated to English the original text I've written to facilitate its understanding. However, I leave the original text below. Thank you for your help).

Hola a todos.
He adquirido hace unos días un dispositivo 'Tobii Eye Tracker 4C' con la ilusión de poder usarlo con el juego 'Project Cars 2'. Mirando en distintos foros, así como en la página oficial de Tobii, indican que hay que entrar a dicho juego a través de la aplicación 'SteamVR'.
La he descargado e instalado en mi equipo correctamente. Pero cuando la abro me aparece el mensaje "Te damos la bienvenida. Conecta tu visor de VR" y de ahí no logro pasar.
Yo no tengo ningún casco de VR, sólo el dispositivo 'Tobii Eye Tracker 4C'. He buscado una solución en Google pero no logro dar con ninguna.
Por ello, recurro con cierta angustia a vuestro auxilio, a ver si podéis decirme cómo logro que SteamVR identifique mi dispositivo 'Tobii Eye Tracker 4C' y no me pida un visor de VR.

[Damsteri]

Very specific question about a hack needed to get a rare hardware to work with a specific game. I think that you might find better luck to find an answer from either Project Cars 2's discussion, or Tobii's support (if they have one). SteamVR users might not be able to give any help to your, unless someone has done exactly what you want to do.

SteamVR is not supposed to be used without a VR headset. It's just an application for connecting VR headset to a PC, so it's almost useless without one. Where you found out the information that it would work without a VR headset? That sounds very strange. I found this post[forum.projectcarsgame.com] with a quick google search, but it's from 2018. SteamVR have changed a lot lately, so that kind of hacks might not work anymore.

[Santi-Tetra]

Originally posted by Damsteri:

Very specific question about a hack needed to get a rare hardware to work with a specific game. I think that you might find better luck to find an answer from either Project Cars 2's discussion, or Tobii's support (if they have one). SteamVR users might not be able to give any help to your, unless someone has done exactly what you want to do.

SteamVR is not supposed to be used without a VR headset. It's just an application for connecting VR headset to a PC, so it's almost useless without one. Where you found out the information that it would work without a VR headset? That sounds very strange. I found this post[forum.projectcarsgame.com] with a quick google search, but it's from 2018. SteamVR have changed a lot lately, so that kind of hacks might not work anymore.

Thanks for answering me, Damsteri.
Reading your post, I become aware of several things, in which I have not fallen, and in which you are very right.
I don't know where to start ... Here I go:
I suppose I cannot include links to external pages, so I will describe to you where they indicate the requirements that must be met to use the Tobii device with the Project Cars 2 game. On the official website of the Tobii enterprise, there is a section where they expose the games compatible with their product ('Games' tab). In the image corresponding to the game (in my case, Project Cars 2) I have left-click with the mouse. On the next screen they show various information, and a yellow label with the legend: "NOTE: Game must be started in Steam VR mode and helmet cam enabled for eye tracking to work.".
My fault, possibly, is that I inferred that to start the game in VR mode, I needed to use the platform's SteamVR tool. But by your words I realize that it is not the specific tool for it.
I also saw the forum that you link to me, but, as you say, nothing that they indicate can be done at present.
On YouTube there are many videos of people showing how the Tobii Eye Tracker 4C device works with the Project Cars 2 game. But in none of these videos I haven't found that they indicate the steps they took to make it work fine.
As you strongly advise me, I will contact the Tobii enterprise. And I'll also try my luck in Project Cars's discussion.
Thanks again for your help, Damsteri !!
A greeting!!