The U1 chip in the iPhone 11 is the beginning of an Ultra Wideband revolution

#News(IoTStack) [ via IoTGroup ]

Headings…
By Jason Snell
The U1 chip in the iPhone 11 is the beginning of an Ultra Wideband revoluti
Security through precision
Beyond AirDrop and tracking tags
Apple is first out of the gate

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Embedded in the U1 is new technology that may dramatically change how our various intelligent devices interact with each other, but Apple is only using it to make a small addition to AirDrop.

From raw data alone, UWB devices can detect locations within 10 centimeters (4 inches), but depending on implementation that accuracy can be lowered to as much as 5 millimeters, according to Mickael Viot, VP of marketing at UWB chipmaker Decawave.

The new Apple‑designed U1 chip uses Ultra Wideband technology for spatial awareness — allowing iPhone 11 Pro to understand its precise location relative to other nearby U1‑equipped Apple devices.
The Apple marketing copy has it right—UWB’s technological trick is allowing devices to pinpoint one another’s locations in the real world with great precision.
The technology works by using a method that Apple’s already using in allowing Apple Watches to unlock Macs: using the total round-trip time of a radio signal (measured in nanoseconds—radio waves move at the speed of light) to calculate how far away a device is.
Put the distance and angle together and you’ve got incredible precision—enough for, the rumors suggest, Apple to use an augmented-reality display to mark the precise location of another device.
Right now, the only feature Apple has announced involving the U1 is a modified version of AirDrop that uses that precision location to determine if another iPhone 11 is close (and, believe it or not, if it’s pointing at your phone), and pops that device to the very top of your AirDrop interface.
UWB can be used to transfer data at up to 27 megabits per second, which is faster than Bluetooth LE, but slower than Wi-Fi. I don’t know if Apple’s using UWB to do the data transfer or just using it for location finding and then switching to a peer-to-peer Wi-Fi connection for fast file transfers, which is what usually happens when using AirDrop between devices.
Augmented reality is also an enormous area of interest for Apple, and UWB can help there, too, by providing location precision for devices and accessories.
The Car Connectivity Consortium, of which both Apple and Google are members, should enable UWB-enabled devices to replace car keyfobs securely

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