Disturbing Details on Fog Technology

Last week, PPSA reported on Fog Reveal, a product from Fog Data Science that sells billions of data points extracted from apps on 250 million mobile devices to local police departments. An unlimited-use, one-year subscription costs a department only $7,500.
 
For this price, Fog Reveal offers a powerful capability, the ability to track hundreds of millions of Americans in their daily movements. It allows police to locate every device in a given geo-fenced area. It also allows police to trace the location history of a single device (and therefore, its user) over months or years.
 
Fog Data Science claims that it is respectful of privacy because it does not reveal the names or addresses of individual users. But a slide show from Fog Data Science prepared for police highlights how this technology can easily be used to track a suspect to his or her “bed-down” over a 180-day period. (Hat tip to the Electronic Frontier Foundation, which helpfully added yellow highlights to significant passages of Fog documents.)
 
It is more than a stretch then to call this data “anonymized” when it follows people to their homes, as well as to their houses of worship, meetings with friends or lovers, trips to health or mental health clinics, journalists meeting with whistleblowers, or other locales that reveal sensitive and personal information.
 
For those in law enforcement who go through the motions of filing a warrant, Fog Data Science offers a template warrant. Such warrants are misbegotten. They can be employed to follow a number of people in the vicinity of a crime or track everyone who attended a political protest. The Fourth Amendment requires “probable cause” in which a warrant describes “the place to be searched, and the persons or things to be seized.” It makes a mockery of the Constitution’s requirement for particularity when the police have at their fingertips a whole ocean of data involving many people. How can such a requirement be fulfilled when Fog technology allows police to go on a fishing expedition in that ocean, with any American potentially being a catch?
 
It is through technologies such as Fog Reveal that our country, device by device, is moving steadily toward becoming a full-fledged surveillance state.
 
Such details should spur Congress to investigate the uses of this technology. It should also inspire Congress to pass the Fourth Amendment Is Not for Sale Act, which would block the auctioning of our private, personal information to all government agencies.