Someone I don't know sent this to me, describing surveillance in China
today.
I live in Hangzhou, and here are some of my experiences.
It still remain mandatory for people to show the app's readout to get
into subway, trains and supermarket, and etc which could be the most
of the public areas. For instance, there is at least one security
guard in each entrance of that area, almost all of residential areas
have only one entrance by now. And except the health code (jian kang
ma) you have to have in order to get elsewhere, you aslo have to
identify yourself to get another ID card to get in the residential
area, and have to show the ID card every time before you get in. In
their practice, residential A area's residents won't be allowed to go
to residential B area, vice versa. If you don't have these
identifiers, the so-called security guard would love to harass you
even they know you just got out the area. It's ridiculous to check
that out again. If you forgot your phone or card, they would take
down your personal information, and they don't have to take a picture
of you since the cameras just in front of you!