Non contact heart rate monitor based on Photoplethysmography based heart rate monitor

These technology developed by Stanford University and MIT. For measuring heart rate from a distance by using camera. We can enhance the technology for old people and small babies to detect their BPM by using a webcam.
Also it can be enhanced by by using neural network trained system to detect automatically bpm of a person. These systems can also be used for covid -19 patient to detect their heart from safe distance. So our medical personnel have not come in direct contact with them.