Calibrate floor height by putting Touch controller on the floor
I think the current way of calibrating the floor level is a remnant of the pre-Touch days, and I still frequently see discussions about the floor level being wrong. I mean, even if I know how tall I am, all it takes for it to be off is for me to be slouching somewhat during the calibration.
I believe putting a Touch controller front-first on the floor during the calibration would be a better approach, as the distance between the floor and the IR rings on the controllers can be accurately measured and will be the same every time for every user.

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Свой commented
I don't think this will help much. It's been 2 years and it still is, and the problem is I don't think you will use a helmet or a controller. In some games, for example, I'm on the floor. The problem is the program, not what it was calibrated to.
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Baris Kilic commented
+1 for this idea
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Hunter B. commented
"OpenVR Advanced Settings Overlay" has a floor height fixing tool included, if you are still having this issue.
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Jonathan Miller commented
You have my vote. The fact that it's still using such an uncertain system after Touch — with sub-millimetre precision — has been out for so long is absurd.
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Chance commented
I agree with this. I spent a lot of time wondering why the floor in VR seemed slightly off. Now anytime after I calibrate my height (which takes multiple attempts) I have to make sure I bend down and start poking at the real floor to check that the VR floor is configured correctly; All of this is a minor hassle, but a hassle nevertheless.