Surveillance

Inventions that are fighting the rise of facial recognition technology
Computer scientists explain how to stop smart devices from spying on you 
Contact Tracing
Singapore to give all residents wearables for contact tracing
Coronavirus Tracking Project
Apple and Google join forces on coronavirus tracking project
Contact-Tracing Apps
Contact-tracing apps could help end coronavirus lockdown
track the coronavirus
New app uses location data to track the coronavirus
audio jammer
Hey Alexa, quit eavesdropping 
anti-facial recognition
The anti-facial recognition fashion statement
gait recognition
New tech can see through walls and ID people by the way they walk
Send messages and use apps without the internet1:27