(404 Media) Immigration and Customs Enforcement (ICE) has bought access to a surveillance tool that is updated every day with billions of pieces of location data from hundreds of millions of mobile phones, according to ICE documents reviewed by 404 Media.

The documents explicitly show that ICE is choosing this product over others offered by the contractor's competitors because it gives ICE essentially an "all-in-one" tool for searching both masses of location data and information taken from social media. The documents also show that ICE is planning to once again use location data remotely harvested from peoples' smartphones after previously saying it had stopped the practice.