No clunky wearables? No chest strap on the treadmill? Heart rate and respiration? Monitors everyone in the house simultaneously 24/7 on a cheap rpi? I hope this doesn't take years to come to market because this seems incredibly useful.
I feel this technology would creep people out so much that anyone in the wifi space would be actively hostile towards these things. Maybe they'll lock it behind patents? I doubt governments would want this to become common knowledge either.