[My EFF colleague Bill Budington has a fantastic report on all the ways that Ring surveils its own customers. Caveat emptor, indeed. -Cory] Ring isn't just a product that allows users to surveil their neighbors. The company also uses it to surveil its customers. An investigation by EFF of the Ring doorbell app for Android found it to be packed with third-party trackers sending out a plethora of customers’ personally identifiable information (PII).