how does the Face ID on my phone recognise my face in low light but my selfie camera just shows up as pitch black?
In: Technology
It generates light in a wavelength humans can’t see. The Face ID system fully illuminates your face with infrared light, then interprets that reflected light. There’s a separate IR emission diode beside the front-facing camera and speaker (there may be more than one).
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FaceID on the iPhone uses infrared lasers to light up your face, but you probably can’t see it. The selfie camera doesn’t have any lights.
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