Impact of Remote Vital Signs Monitoring in People Using Long-term Oxygen Therapy

This study is testing whether wearing a small device at home that tracks vital signs (like oxygen levels and heart rate) can help people with chronic lung diseases — specifically COPD (chronic obstructive pulmonary disease) or ILD (scarring/inflammation of the lungs) — who already use home oxygen therapy. **You may be eligible if...** - You are 18 or older - You have been diagnosed with COPD or ILD - Your condition has been stable for at least 6 weeks (no recent flare-ups or hospital stays) - You are already on home oxygen therapy and optimized medications - You have a compatible smartphone **You may NOT be eligible if...** - You have other significant lung diseases - You had a heart attack or unstable heart condition in the past 4 months - You received a lung transplant - You live outside the study coverage area Talk to your doctor to see if this trial is right for you.