Over de nieuwe U1 chip in de iPhone 11
geplaatst: 15 september 2019 - 11:39


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

Apple likes talking about the awesome chips it designs for its iPhones, but it hates even hinting at products it hasn’t yet announced. The new U1 chip—introduced with the iPhone 11 but never mentioned on stage at Tuesday’s iPhone event—strikes at the heart of this conflict. 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.


Security through 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. This prevents your Apple Watch from unlocking a Mac unless it’s in close proximity.

This is an important security feature, because other wireless technologies such as Bluetooth tend to estimate distance by measuring the strength of a wireless signal, not the time it takes for it to be sent to a device and then returned back to the sender. Sneaky people could relay a signal and boost its power and fool a Bluetooth device into thinking you were nearby when you weren’t. That’s a security hole wide enough to break into a Mac or steal a car.

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Discussie op HN.
geplaatst door: puk1980
Heerlijk, die stilte! : - )
antw: Over de nieuwe U1 chip in de iPhone 11
reactie #1 geplaatst: 15 september 2019 - 13:29
That’s a security hole wide enough to break into a Mac or steal a car.

Dat staat daar niet voor niets, want met zulke signaalversterkers worden op dit moment al auto's gestolen.
geplaatst door: GeorgeM