China Southern Airlines has purchased 40 additional self-service check-in kiosks from NCR to improve passenger convenience.

Earlier this year, China Southern deployed 30 NCR TouchPort kiosks at the airline’s big-city hubs of Guangzhou, Shenzhen, Changchun and Zhengzhou. The additional kiosks will be deployed in the airline’s other big-city hubs of Beijing, Shenzhen, Urumqi and Dalian.

The self-service kiosks enable China Southern passengers the ability to check-in, search for flight information, request mileage credit, scan and print boarding passes and check mileage.

Though self-service check-in is relatively new to travelers in China, 30 percent of China Southern’s passengers that depart from Guangzhou are opting to serve themselves. China Southern expects that number will continue to rise.