Cities can be highly connected with video surveillance and facial recognition. Singapore and Hong Kong and many other cities have more intensive infrastructure. But this is no omniscient. People don’t have awareness of how these all work. Work arounds will be found. Hong Kong’s face masks have clearly frustrated authorities capabilities. Big brothers best tool is propaganda and persuasion using FUD. Fear Uncertainty and Doubt. People have been finding ways to evade big brother for as long as civilization has been around.