Mobile technology may help to better understand the adherence to treatment. MASK-rhinitis (Mobile Airways Sentinel NetworK for allergic rhinitis) is a patient-centred ICT system. A mobile phone app (the Allergy Diary) central to MASK is available in 22 countries. Background Mobile technology may help to better understand the adherence to treatment. MASK‐rhinitis (Mobile Airways Sentinel NetworK for allergic rhi...