Hey forum, smartwatch sensors (heart rate, oxygen, movement, etc.) actually work on what principles? For example, when measuring pulse via LEDs, what optical methods are used? If you could explain in a bit more detail, I'd appreciate it.
How do smartwatch sensors work?
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Thanks for the info, bro. I think these sensors work just like the ones doctors use, but in a smaller form. They use something called photoplethysmography to measure your pulse, which basically means they shine a light onto your skin and measure the changes in the reflected light—pretty clever, right?