Best device to measure respiration rate for Peter Gamma from www.petergamma.org

It is the device which has been published here: «Wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate» https://www.nature.com/articles/s41746-020-0307-6 Similar to for gold standard for HR measurement which requires: a setup wich is based on combined signals from: developed by a bioinformatician like Rob ter Horst, and published in Nature. But Peter Gamma …