Based on the short literature research I did that's visible in my other comment, I came to some rough ideas on how to make a good sleep tracker. If there are pe

Based on the short literature research I did that's visible in my other comment, I came to some rough ideas on how to make a good sleep tracker. If there are people who want to work on it, feel free to reach out. Creating this as a side project might be something I was going to do anyway to learn about data science and some simple hardware hacking. It's currently 2nd on the list (only beaten by the 1st thing: prepping for interviews). What I think that technically needs to happen at minimum is: 1. Movement 2. HRV 3. EEG (brainwaves) That will be the minimum viable product that may become as good as polysomnography and bring sleep lab tech to your home. Dreem claims to be doing this, but it isn't clear whether their claims are true. Companies like Zeo produced presumably good results, yet they are now bankrupt. It's quite infuriating to see. So there's a business model (or simply an organizational problem at Zeo at the time) and I'm not clear what it is. The tech is already here! For example, Somté PSG shows that it can be done, and I'm simply thinking to myself: this could be more user friendly, couldn't it? [1] Marketing-wise, I think the following needs to happen: 1. Get multiple unrelated universities to test your device against polysomnography and iterate against it. 2. Once it's within the 90% agreement range, then even make a YouTube video about such tests. Keep testing it against the golden standard, because if you are as good as the golden standard, then you can really state you track sleep. 3. Also test different PSGs with each other, because while PSG is the golden standard, no study told to what extent they actually agree on sleep metrics. There probably are studies on it but they didn't test this (or comment on it even, I believe) when wearables such as a Fitbit were studied as well. 4. Make ridiculous cool claims like everyone is already doing. Really go for the full appeal to authority, like Dreem is doing (nothing new). [1] https://www.compumedics.com.au/products/somte-psg/ https://www.compumedics.com.au/products/somte-psg/