The authors point out that whereas digital technology is transforming almost all areas of our lives – enabling us to order shopping online or book airline tickets, for example – its use in the NHS is still limited. They explore the evidence to date from seven types of technology for patients in primary care, including online triage programmes such as symptom-checkers, so-called ‘wearable technology’ like Fitbits, online GP appointment booking, video consultations, and health-related apps.