Semi-related question. I recently took an at-home sleep apnea test using the WatchPAT ONE (https://www.itamar-medical.com/professionals/disposable-hsawatchpat-o

Semi-related question. I recently took an at-home sleep apnea test using the WatchPAT ONE (https://www.itamar-medical.com/professionals/disposable-hsawatchpat-one/ https://www.itamar-medical.com/professionals/disposable-hsaw...). It includes three main pieces you can see in the image there: a wristwatch-like sensor, and finger sensor, and a sensor you attach just above your sternum (primarily to track breathing events for sleep apnea). There is an associated phone app. Of course, thanks to capitalism, the device is marketed as disposable (I love how this is somehow portrayed as a bonus in the marketing materials). You're literally supposed to throw it away after a single use. So questions: 1. I've searched online but haven't found anything about people successfully hacking the device so it can be used multiple times. Has anyone seen any succesful hacks of this? If not, can anyone point me to some resources where I would even start to try to hack it? It communicates with the app over bluetooth. 2. Does anyone know of other medical-grade sensors that are usable by consumers that are not disposable? I ask this because in the past I've just used the "Sleep as Android" app with a smartwatch and it was horribly wrong. It just checks for movement, and there are lots of times when I an exhausted, staring up at my ceiling not getting any sleep, but I'm not moving because I'm stuck in this exhaustion-but-not-sleeping state.