https://www.linkedin.com/in/peterhcharlton/?originalSubdomain=uk read about PiEEG: https://petergamma.org/tag/pi-eeg read about ECG: https://petergamma.org/category/ecg-devices and forget about PPG under www.petergamma.org.: https://petergamma.org/category/optical-heart-rate-sensor & forget about YouTube & forget about what you find somewhere in the web & get your information for instance at the Federal Institute of Technology in Zurich: https://infozentrum.ethz.ch/en Information for product sellers who do stock market speculation and … Continue reading 090e. Has Rob ter Horst & the manufacturers of smartwatches lost their credibility with their smartwatch accuracy tests – and if so what are the consequences for us personally?