Umbrellas

Umbrel­las are prac­ti­cal when it comes to avoid auto­mat­ed face recog­ni­tion from CCTV et cetera, since they are every­day items and can’t be effec­tive­ly banned by author­i­ties.

Pro­test­ers spray paint a sur­veil­lance cam­era in Hongkong in July 2019 using umbrel­las