Possible duplicate:
Camera heart rate detection
I need the same functionality as the Instant Heart Rate app.
The main process requires the user:
Place the tip of your index finger gently on the camera lens. Apply even pressure and cover the entire lens. Keep it steady for 10 seconds and get a heart rate. This can be achieved by turning on the flash and observing the change in light as the blood moves along the index finger.
how can i start
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