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For large scale uwb to work one needs to probably use TDoA - In which case we would probably need more than one tag. TDoA is private by default as the phone is
by accurrent 6y ago
For large scale uwb to work one needs to probably use TDoA - In which case we would probably need more than one tag. TDoA is private by default as the phone is a passive listener. That being said I don't believe any of this is really a plus for privacy per se.
- Hippocrates 6y agoI was thinking that iPhones in pockets would suffice as more than one tag, especially in public spaces with plenty of people. With that, the floor plan or walkable space could be mapped out programatically. I agree it doesn't seem to be a plus for privacy, but I hope, and expect that is a consideration. I was recalling the approach taken to find-my: https://www.wired.com/story/apple-find-my-cryptography-bluetooth/ https://www.wired.com/story/apple-find-my-cryptography-bluet... which seems to protect a users individual location while leveraging location of devices in the environment. I am just speculating here, but I think this is part of a larger play to map out indoor space which could bring amazing new features to maps, "find my", and AR applications.