Apart from keeping you from touching your face, they raise the alarm on those that see you, so they tend to keep their distance. https://sentido-labs.com/es/bi

Apart from keeping you from touching your face, they raise the alarm on those that see you, so they tend to keep their distance. https://sentido-labs.com/es/biblioteca/coronavirus-2020-02-Laurie-Garrett/#section-00-09-40.960 https://sentido-labs.com/es/biblioteca/coronavirus-2020-02-L... (Text and video subtitles are in Spanish, but sound is the original English)