If you can figure out a way to do without the nasal cannula, the possibilities are huge. Maybe a good IR camera could look at the air coming out of your nose an

If you can figure out a way to do without the nasal cannula, the possibilities are huge. Maybe a good IR camera could look at the air coming out of your nose and determine the velocity. Seems like it's actually already a thing [1]. Cynically, you could use it for surveillance, similar to how they do face recognition or temperature scanning in airports. The flip side of the coin is that it could be used for better authentication or medical purposes. Maybe your oxygen tank could realize you're breathing different than usual to warn you that you might be having a seizure, stroke, or heart attack. Or maybe we'd have "breathe to sign in" similar to FaceID [1] https://www.youtube.com/shorts/J_EBMhrinNc https://www.youtube.com/shorts/J_EBMhrinNc