I came across articles like:
https://www.sciencedaily.com/releases/2021/02/210210142049.htm
https://pubmed.ncbi.nlm.nih.gov/27836601
and
I wonder, based on the current bio-engineering technologies and theory, how much power, bio-electricity or otherwise, can be obtained from the human body (like heat, bloodstream, glucose, etc.) to charge some (bio)battery of certain devices attached to or implanted in the human body (like a detector that collects information and transmits signals to receiver from a certain distance, as in the third article)? Is such technology realistic now or does it have concrete applications?
