Your heart is a muscle that functions like a pump to circulate blood through the arteries and veins of your body. For each normal contraction of you heart, the blood pressure underneath your face skin changes and the reflection of light from your skin is changed.
HealthKam technology uses the front video of your smart device and computers to capture the subtle changes in the light reflected from your facial skin to extract information about your pulse. This process is working while you are using your devices for other purposes so no need for following any recording procedures or buy any new devices.
HealthKam is not a diagnostic device.