The UK Cinema Association - which includes Cineworld, Odeon, Showcase Cinemas, and Vue - are partnering with digital ID firm Yoti.
The free app will be accepted as proof of age, providing a safe and convenient way to show ID.
It is hoped the move will tackle abuse against cinema staff too.
Yoti harnesses the same technology you see at the airport, where you scan your passport and capture an image of your face.
