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Redesigned blood oxygen monitoring returns to Apple Watch following patent dispute
Feature had been removed from US Apple Watches after Apple lost a patent fight.
In early 2024, Apple removed a blood oxygen monitoring feature from its then-current Apple Watch Series 9 and Ultra 2 watches, following a ruling that the feature violated light-based pulse oximetry patents from a California-based company called Masimo. Apple says that watches outside the US won't be affected by the update, since they were never subject to the US import ban in the first place. Andrew is a Senior Technology Reporter at Ars Technica, with a focus on consumer tech including computer hardware and in-depth reviews of operating systems like Windows and macOS.
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