These may very well be used for various features corresponding to biometrics, refining the capabilities of Face ID or Contact ID, it appears, or maybe resulting in the return of Contact ID to future iPhones. And, by the way in which, this isn’t the primary patent to recommend the Apple Watch might acquire biometric recognition capabilities.
However they is also used for the detection of particulate matter and subsequently have the ability to report air high quality, the patent says. It suggests this might occur when the laser was used “together with a photodetector”. A current vacuum cleaner from Dyson makes use of inexperienced laser mild to indicate up mud motes your vacuuming may in any other case have missed. So, to make use of a laser to indicate particulates within the air may very well be useful.
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