Getting SPO2 is actually hard

• Was the CMS50EW too good to be true?

• Unfortunately yes, the protocol is not open, the bluetooth stack is so bad that it didn't work with 3 out of my 4 windows machines (some VMs) and did not work with any VM .

• Once the data is in the software, there is no data export mode, just graphs.

• It's bulky and awkward to wear at night, it has to be carefully secured with tape to prevent bad readings from exposing the wrong part of the nail (better probes work around that).

• I wasn't too interested in having to do syncs and downloads each night and hand synchronize streams from multiple sources.

• Generally, I found it not workable for my project, and have not yet found other options I can use real time.