Effectiveness of the WearME System for COPD Severity and Respiratory Function

This study is testing a wearable device called WearME to see how well it tracks breathing and lung function in people with COPD (chronic obstructive pulmonary disease) — a lung condition that makes it hard to breathe. **You may be eligible if...** - You are between 21 and 100 years old - You have been diagnosed with COPD (any severity — mild, moderate, severe, or very severe) - You can read and sign consent forms in English or Spanish - You are a current, former, or never-smoker **You may NOT be eligible if...** - You have a skin allergy or skin condition that might interfere with wearing the device - You are currently on a breathing machine (invasive mechanical ventilation) Talk to your doctor to see if this trial is right for you.