

Inconsistent within the same airport.
One time the line split into two, with announcers for each line shouting different instructions. One had you take all electronics out of bags, the other didn’t. One lines instructions included taking your shoes off, the other didn’t. The line without shoes off instruction had agents insulting people for taking their shoes off for not listening to instructions. 10M away there is an agent shouting at people to take your shoes off.
Many phones support it. My old mid range Samsung galaxy phone from 2020 had it, as does my Pixel 9a.