Ed Mariano, MD, MAS, FASA 🇺🇸🇵🇭 on Twitter: "I just figured out that my phone has a built-in pulse oximeter! Samsung S Health App #mhealth #HealthIT https://t.co/lFbtquXMbN" / Twitter
Galaxy Note 4: Blood Oxygen Saturation measurement | Samsung India
Pulse Oximeter vs SpO2 monitor in Smartwatches: Blood Oxygen Track Reliability, Which One Should You Buy in COVID-19 times, Should you rely on smartwatches to measure blood oxygen,
Why inaccuracies with pulse oximeters were ignored for so long
Cureus | Reliability of Smartphone Applications for the Quantification of Oxygen Saturation | Article