Delta is introducing four self-service bag drop machines at Minneapolis-St. Paul International Airport this summer, allowing customers to quickly, securely and easily check their own bags.

One machine will be equipped to test facial recognition technology to match customers with their passport photos through identification verification, a first for U.S. carriers.

The introduction of self-service bag drops and facial-recognition technology is another next step in Delta's effort to streamline airport processes and is complimented by its radio frequency identification technology.

Previous self-service innovations like ticketing kiosks and check-in via the Fly Delta Mobile app have transformed congested lobby areas and drastically improved customer satisfaction scores.

The airline will collect customer feedback during the trial and run process analyses to ensure that this lobby enhancement improves the overall customer experience.

Studies have found that self-service bag drops have the potential to process twice as many customers per hour.

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