Marker size is the rough estimation of the image we r tracking in real world?
by user 392979063620501504
marker size is width in meters which is the size of your marker in meters in the real world 
So far this is what is going on
Edit: this is on quicklook on ipad
by user 392979063620501504
Image and link
by user 392979063620501504
My one concern is if the image size varies, would it scale with it? (it does in the image tracking sample, tested between phone and ipad and vice versa)
by user 392979063620501504
Iām not sure why the other objects arenāt showing up, or y it isnāt even aligning 
by user 392979063620501504
Even more erratic behaviour on android, much slower performance and bad tracking
by user 392979063620501504
It looks like the WebARSessionRoot or Webxr component is not on the root of your scene. Is that maybe the case?
Basically that physical size is a hint to the device tracking, theoretically it works better when the actual physical size and the value youāve given match, but in practice Iāve seen most devices be āsmart enoughā to put more trust the actual physical value they measure
Itās on the room object, I donāt really understand what root of the scene means, Iāll just pack and send in the blender file for you to check it out
by user 392979063620501504
Got it, so if itās in the rough ballpark it should scale appropriately
by user 392979063620501504
āTypically yesā ā but if you know the physical size (e.g. you print something out) then Iād still advise to set the value correctly.
You can also report a bug from the World tab in Blender, that will pack data too and put it in the proper place for us to look at
Oh right, I keep forgetting about that
by user 392979063620501504
On it
by user 392979063620501504
Report sent
by user 392979063620501504
The root of the scene refers to the parent object of your hierarchy. If you put the WebXRSessionRoot component there (and remove it from the other object) it should properly hide/show and place your content in AR
I was going through the unity example, you mean like this right? Iāll look into it since Iām not sure how itās done on blender
by user 392979063620501504