RecruitingThe ROAM Research Study Therapy (LTOT) VersionThe purpose of this research is to test a device being developed that can see how patients use oxygen therapy over a long period of time. This study will focus on developing a new display part called ROAM module which will be attached to your oxygen source. The display will provide easily-accessible information that can show how you interact with your supplies and the oxygen machine automatically without connecting the oxygen source to the internet or other devices.