A Deep Dive Into the Technology of Corporate Surveillance

https://www.eff.org/document/behind-one-way-mirror-deep-dive-
technology-corporate-surveillance

Just a few bits and pieces from the article. Lots more at the site.

Trackers are hiding in nearly every corner of today’s Internet, which 
is to say nearly every corner of modern life. The average web page 
shares data with dozens of third-parties. The average mobile app does 
the same, and many apps collect highly sensitive information like 
location and call records even when they’re not in use. Tracking also 
reaches into the physical world. Shopping centers use automatic 
license-plate readers to track traffic through their parking lots, 
then share that data with law enforcement. Businesses, concert 
organizers, and political campaigns use Bluetooth and WiFi beacons to 
perform passive monitoring of people in their area. Retail stores use 
face recognition to identify customers, screen for theft, and deliver 
targeted ads.

Amazon and Google have both allowed employees to listen to audio 
recorded by their in-home listening devices, Alexa and Home. And 
front-facing laptop cameras have been used by schools to spy on 
students in their homes.