I'm hoping to set up a multi-user Quest experience with predefined roomscale boundaries for each user. Ideally, these boundaries could be communicated to the user in some way that wouldn't involve drawing or taping on the floor of the room. The user could then see the boundaries with the passthrough camera and trace them to define their play space. And since the room is on the larger side and will have many users walking about, guardian is most certainly going to forget assigned play spaces in between users, hence the need to do this in the first place.
I have noticed that the Quest's passthrough camera picks up on certain light that is invisible to the naked eye (e.g. the light emitted by the sensor on the front of my iPhone), and it's more sensitive to the reflective properties of certain surfaces, like surfaces with a glittered effect.
So would it be possible to demarcate play spaces using some kind of, say, holographic or reflective tape/paint that wouldn't be too noticeable to the naked eye but come through in the passthrough camera? Does anyone have any experience or suggestions of how something like this could be done, and whether it could be done at all? I can't find any in-depth specifications about the passthrough camera that would tell me the range on the electromagnetic spectrum that the camera would be sensitive to.