How to measure Heartbeat using finger

I want to make app that can measure heartbeat using finger on mobile camera what are steps please guide

I want to make an app to measure heart rate using finger on mobile camera
I have used pro camera extension by which I can get images of finger

Here is the theory

How to do it in Kodular will be an interesting challengeā€¦ let us know about your progressā€¦

Taifun

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