I recall a comment here recently about someone whose insurance would only pay for the CPAP if the usage statistics showed enough usage. The problem was that the person kept unknowingly taking off the mask while sleeping. Talk about a stressful situation!

That was probably me. Compliance has been even more difficult lately with my seasonal allergies. The silly thing is that the physician who prescribed it doesn't check in on me other than one checkup a few months in to having it, so it's really only used as a fiscal compliance tool.

Lots of manufacturers probably do it, but I'll name and shame anyway... it's a ResMed AirSense 10.

The CPAP is extremely useful if used correctly (rather than just enforce compliance). It allows a clinician to monitor remotely for all sorts of issues and follow up with the patient.

There are a whole bunch of issues that can occur that a patient may not be aware of because they are asleep. Generally I wish we'd all use some kind of sleep monitoring system or at least we started routine screening for sleep disorders

My CPAP just has an SD card which I can remove and bring to the therapist.

The benefit of this is that I don't have to rely only on the therapist, I can also read the card myself with tools like OSCAR: https://www.sleepfiles.com/OSCAR/

I would really hate having one that reports via 4G to the therapist only.

Most of the cellular connection CPAP machines also have a SD card slot and will put the full logs on it if you put a card in.