UPDATE Nov. 5, 2020. Want a crash course in how to identify surveillance technologies at protests? Watch EFF’s new video presentation on How to Observe Police Surveillance at Protests. The 25-minute video, taught by Senior Investigative Researcher Dave Maass, explains how you can identify various police surveillance technologies, like body-worn cameras, drones, and automated license plate readers, which may be used to surveil demonstrations. In the video, you will learn:

Where to look for these devices
How these technologies look
How these technologies function
How they are used by police
What kind of data they collect
Where to learn more about them