Ultra-Wide Band: a Transformational Technology for the Internet of Things
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Ultra-Wide BandInternet of ThingsWireless Technology
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> Imagine:
> Your thermostat adjusting the temperature automatically as you enter the room.
> Your TV resuming your favorite show that you were watching yesterday as you sit on the couch
> Your car door automatically opening when approach the vehicle and adjusting its seat position and temperature based on your preferences
The vast majority of people want a thermostat that maintains a constant temperature everywhere.
Clicking one or two buttons to resume a TV show is minor.
Pulling the handle on a door and pressing a preset seat position button is a minor inconvenience if that.
Add the above to the possibly flawed assumption that folks may not actually want the automatic behavior makes the "value" negative in some cases.
None of this is worth internet connectivity.
The driver pushing this is that internet connectivity enables data collection that can be sold.
Those cards could be replaced, even more easily, with NFC cards with better security properties. ISO 14443-3A is a perfectly adequate protocol and has the nifty added benefit of not needing batteries in the card.
Even secure ranging is doable at NFC frequencies — all it takes is a vendor who is willing to do the work as well as customers who will demand it. I think I even saw papers about this years ago: the reader and the card can securely negotiate a request that the door will send and the card will reply to, and then the door sends the request and the card validates the request (against precomputed data) and replies. It’s okay if there’s delay due to the limited computational power of the card as long as the card knows what the delay is and can report the delay to the reader. This will give ranging precise to a bit time or better, which is nowhere near the 10cm precision that UWB offers but is a whole lot better than anything anyone has actually deployed in an iClass-style device.
But customers aren’t even demanding cards that are immune to trivial UID cloning.
Doesn't that depend on how you use it? it's just a frequency band.
10cm is pretty good positional accuracy too, albeit it feels perhaps short of what we'd need for great pose tracking. To me it's fun to consider what a smart home that can better project it's own digital twin. Also useful data for AR & spatial computing.
For anyone else following Mouser new product feel, I think the arrival of Qorvo'a newest Qorvo QM35825 RF SoC was a very fun arrival to see. https://www.mouser.com/new/qorvo/qorvo-qm35825-uwb-low-power...
I do wish that high bandwidth UWB was doing better. I really like the idea of a wireless dock, being able to plug in USB devices and get good bandwidth and especially low latency. I'm not super keyed in to what's happening in VR headset space but they seem to be the only folks using high speed UWB at all these days. WiGig / 802.11ad I hope we see you again!
This is wandering really far afield from the topic at hand, but should out to FluxPosez which is trying to build short range pose trackers using magnetic sensing. Seems really neat too. https://www.fluxpose.com/