The article discusses the risks of precise geolocation data being collected and sold, highlighting a report by Citizen Lab on the Webloc system, which can track individual devices and provide detailed location information. The system is used by various US federal and state agencies, as well as foreign authorities. The article argues that the US needs to ban the sale of precise geolocation data to protect national security and civil liberties. A recent ban on the sale of such data in Virginia is seen as a step in the right direction.