from WND:

‘To do this, we tracked devices that regularly visited both Crooks’ home and place of work and followed them’

Who visited Thomas Crooks’ home before he attempted to assassinate President Trump?

Mobile ad data analysis reveals someone who regularly visited Crooks’ Pennsylvania home also visited a building in DC near an FBI office.

The Oversight Project identified nine devices linked to AD-IDs that were located at Crooks’ home and work within the last year.