EasyJet has taken on Jumio's real-time identification and authentication system to provide a passport scanning feature as part of the EasyJet app.
The airline claims the app is the first of its kind in Europe. United Airlines offers the same service in the US.
By using the app and scanning in their passports, passengers with iOS or Android devices will now be able to check in before arriving at the airport. Currently the EasyJet apps have been downloaded some 10 million times.
The app is pitched as a means of easing the boarding, check-in and flying experience, and already includes features like mobile boarding passes.
"Our new mobile passport scanning function will save time for the millions of customers who use the app to input their travel documentation details," said James Millett, EasyJet's head of digital.
"We've developed the new function in partnership with credentials management service Jumio to ensure that details can be scanned in easily, safely and securely.
"Combined with our mobile boarding passes, customers can now check in on their mobiles up to two hours before flights at 110 of the airports EasyJet flies to across Europe."
The EasyJet app lets passengers download their boarding passes and carry out flight preparation tasks like arranging how much luggage they will be taking on board.
The travel and leisure industry has been making strong strides into capturing the consumer trend for smartphones and application usage.
The Hilton Hotel group has an app that offers a similarly smooth ride through hotel booking and check-in. At launch, the firm pointed at airlines as leaders in the customer-facing technology market for features like mobile check-in.
Christopher Nassetta, president of Hilton Worldwide, said at the time: "For nearly a century, our guests have counted on us to consistently deliver exceptional experiences around the world, and in today's digitally connected culture, that means providing them with more choice and control over their hotel stay through technology.
"Travellers can use their smartphones as boarding passes to get to their seats on an airplane, so it is only natural that they will want to use them as a way to enter their hotel rooms."
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