The only development of which we know is HeartPy from Paul van Gent, Delft University of Technology the Netherlands: https://scholar.google.com/citations?user=OOhuA6gAAAAJ&hl=it and Peter H. Charlton from University of Cambridge which uses HeartPy: https://scholar.google.co.uk/citations?user=BJjD81oAAAAJ&hl=en but we know only of his YouTube examples about it. And Talha Iqbal from the University of Galway, Ireland Galway which uses HeartPy: …