I just went through a similar system at Hong Kong. It worked well and I breezed through the automated gates while a long line of people were backed up at the traditional line. Perhaps they just did a better job of designing the system, but you scan your passport at one station and then step forward into a scannner with a sign telling you where to look. A gate closes behind you. If it fails, it flagged a human to that lane but kept you locked in the box. In my case, it beeped and opened the door into the terminal.

I’ve lost a significant amount of weight since my passport photo was taken. Several human border guards in other counties suggested I get a new passport. One required me to show a second form of ID. The camera system had no issue.