The AR overlay that people have identifies and classifies people. There is two different modes this is happening. When walking on the street each person is identified by displaying their name. Also age and profession is displayed. How people are classified by the system is more clear in the detailed mode that comes to view in situations when a person is interviewed or questioned. Then also sex, ethnicity, relationship status etc. is made visible. A frame around the face implies that at least some of the data is collected and processed by facial recognition software. Other parts of the data seams to be drawn from files connected to the identity. However, the AR clearly displays a bureaucratic classification system.
In the opening scene detective Sal Frieland discovers that the AR fails to identify Anon (Anon) an unnamed woman who hacks peoples' "eyes" to remove records they don't want to keep. He is surprised and turns around when the label Unknown/Error is hovering over her face when she passes by. (Netflix, ANON, 3:15)