Metro is adding a few bells and whistles as it repairs crumbling platforms at the six stations south of National Airport.

Shelters with USB charging ports, a newer style of passenger information display screens, and less slippery tiles are being installed before the stations reopen September 9. The six stations have been shut down since late May as the transit agency reconstructs their outdoor concrete platforms and performs other repairs.

The train arrival screens are similar to a style piloted near elevators at Judiciary Square, Arlington Cemetery, Smithsonian, and other stations. They use newer technology than Metro’s standard yellow-lit screens and will display train arrival times while service alerts and other messages scroll along the bottom.

Metro says it will double the number of train arrival screens on each platform. New, 55-inch digital screens will replace printed Metro maps and also provide service alerts.

Like many other indoor stations, LED lighting is coming to platform canopies and under stairway handrails. New security cameras and call boxes to reach station managers are in the works as well.

The USB charging ports at other stations got mixed reviews from riders. Many passengers hoped they wouldn’t be on the platform long enough to get a meaningful phone charge.

https://twitter.com/CT_Ford/status/1153699614383644673

https://twitter.com/marcussimon/status/1153698928069632000

This goes back to a frequent complaint from Twitter critics who want Metro to run more trains before doing other things, but some say they would use the ports if necessary.

https://twitter.com/JesseBinDC/status/1153709486579867650

https://twitter.com/Jofi_Joseph_99/status/1153698621138907137

https://twitter.com/jceron12/status/1153698206817095680

But some were concerned about plugging their phone into public ports, fearing data hacking and security concerns. “Plugging into a public USB port is kind of like finding a toothbrush on the side of the road and deciding to stick it in your mouth. You have no idea where that thing has been,” IBM’s Caleb Barlow told Forbes back in May. “And remember that that USB port can pass data.”

https://twitter.com/Chronomor/status/1153698728223617026

https://twitter.com/EmIpsaLoquitur/status/1153699906667855874

This story originally appeared on WAMU.