Something like it would be great if there were separate on- and off-loading stations. Load up the locker in the loading station, then send it off so it arrives to meet the train in the offloading station. In a single-station set-up, it's pretty pointless, however.
By the looks of it, this system means guests can unload their bags in the batching gates on one side of the station and collect when exiting on opposite side. Surely there are simpler ways of doing so but I do love the look of this system.
Not only does it not look particularly secure, what happens if it breaks down and someones bag is stuck above the track?