This is quite interesting research that not only uses devices more available to everyone (not everyone has high-end smartwatches or wearables), but also to hear how they used infra-red to overcome the effects of different skin pigment colours.
Yes, there is no end result quite yet, but it will be pretty mind-boggling to think that many smartphones may be able to replace (or at least do early detection) devices that currently cost US$10,000 or more.
Watch
https://youtu.be/3kAwVrkL6B8
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alzheimers
