The new app feature, which uses Apple’s ARKit 2 technology, works by using augmented reality combined with customers’ smartphone cameras.

The scan itself provides an on-screen 3D box which, when combined with the phone’s camera, measures the cabin bag and indicates whether it fits within the maximum dimensions.

Cormac Reilly, vice-president and global head of travel partners solutions, who developed the feature for easyJet at Travelport said: “Audiences are increasingly demanding digital solutions to improve their travel experience. We were thrilled to support easyJet to again push the barrier of innovation.

“By incorporating this unique augmented reality feature in the app, easyJet will further reduce unexpected baggage queries on arrival.

"It is enhancements like this that have helped easyJet stand out as leaders in digital innovation and achieve the 30 million app download milestone.”

The baggage app will initially be available to users of Apple iPhone 6S and upwards.