[codeulike]

I'm skeptical that _anyone_ can make an SpO2 sensor that is good enough to continuouly monitor someone during sleep without lots of false alarms. Even the ones hospitals use (that wrap around a finger or toe and shine red light through it) are quite jittery and prone to false alarms or weird readings if you move around too much.

e.g. it seems the SpO2 sensor on this Withings watch is an 'on request and then sit still for 10 seconds' type feature. No good for continuous monitoring.

[IvyMike]

I have the Wellue SleepU, and it seems to work pretty well. Granted I'm not counting on it to save my life in a hospital situation, so any false readings really don't matter. But looking at the nightly data, it seems to gather pretty solid data.

https://getwellue.com/pages/sleepu-oxygen-monitor

[draugadrotten]

I've got a garmin which measures SpO2 during sleep and it does it by shining a red light through the skin for 10-20 seconds. Seems to work well enough to show if levels are OK or impacted by snoring - would probably be accurate enough to alert people about Corona hypoxi as well. https://www.reddit.com/r/Garmin/comments/c2kh7d/how_accurate...