The airline said it will get feedback from customers and employees during the test.
"These developments will also accelerate the culture of hospitality by minimizing barriers between agents and customers, driving even more personal engagements and exceptional customer service," said Delta chief operating officer Gil West in a written statement.
The airline began testing boarding pillars earlier this year at five gates on Concourse B. The pillars are similar to the posts now used by Southwest Airlines to organize passengers lining up to board for its open seating system.
Delta also tested automated boarding gates several years ago but initially found they "didn't move the needle the way we hoped." But the airline continued to experiment with different boarding systems.
The test Delta is doing now will continue later this year with a second phase focused on integrating biometric boarding, similar to how the airline is now working with biometric identification technology firm Clear to allow some passengers at Washington's Reagan National airport to board with their fingerprints. That phase will also focus on "increased agent mobility and "the customer's digital experience at the gate."
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Atlanta-based Delta said it is running a three-month pilot project on three gates on Concourse T at Hartsfield-Jackson.