I realize I'm (very) late to the thread but I had a similar experience with US CBP this spring after a Royal Caribbean cruise. It worked amazingly well.
I would very much like to see this implemented for airline boarding - would speed the entire process up, especially for int'l flights where passport scans have already taken place at checkin. Simply can't express just how pleasant it made the entire CBP experience -- even compared to the typical Global Entry process, this was more expedient.
https://www.cbp.gov/newsroom/local-m...rt-new-orleans