1. Digital inhaler devices have existed for over two decades but are only beginning to emerge as an important component of e-health for asthma and COPD management.

2. These devices gather data on adherence, and can be linked with information on symptoms, physiological measures, and environmental conditions to allow personalized decisions about asthma and COPD management.

3. Key roles of these devices include: characterizing and improving inhaler adherence and use; reducing exacerbations; improving inhaler technique and pulmonary function; and informing costly and potentially risky interventions.

4. There are opportunities to improve patient medication adherence and outcomes by using the data from digital inhalers and associated platforms to enhance clinical decision-making, improve adherence, and guide clinical care.

5. More data are needed regarding patient and end-user acceptability, cost-effectiveness, and effect on inhaler technique.