© Ban The Cams!
Drones with loudspeakers have been swooping between apartment blocks in China ordering people to stay inside under the world's strictest lockdown.
Leave No Dark Corner: In China, advances in technology are making surveillance techniques more and more sophisticated. Now, a citizen's most trivial actions -- or even, it seems, their ethnicity -- can affect their freedom.
If you jaywalk, a CCTV camera will scan your face and flash it up on the huge screens for all to see.