In September, 404 Media reported on ICE’s planned purchase of the technology, consisting of two Penlink products called Tangles and Webloc. 404 Media has now obtained material that explains in greater detail how the system works.
The material shows Webloc users can search its databases of mobile phone data in various ways. Users can perform a single perimeter analysis to search a specific area for mobile phones across a certain time period. They can draw the target area with a rectangle, circle, or polygon. They then select the maximum number of results the system should display, and the maximum number of devices to return.
Once a Webloc user has identified a device of interest, they can get more details about that particular phone, and, by extension, its owner, by seeing where else it has travelled both locally and across the country. Users can click a route feature which shows the path the device took. The material suggests that if users look at where the device was located at night, they might find the person’s possible home, and during the day, the person’s possible employer.
The software can also do a multi-permiter analysis, which monitors multiple locations at once to see which devices have been present at two or more specific places.
If you need a link to get past the paywall to read the entire article, here it is.







