On a computer screen a map shows the movements of smartphones around the globe. Zooming into an abortion clinic in the south of the United States, the online tool shows more than 700 red dots over the clinic itself, each representing a phone, and by extension, a person.

The tool, called Locate X and made by a company called Babel Street, then narrows down to the movements of a specific device which had visited the clinic. This phone started at a residence in Alabama in mid-June. It then went by a Lowe’s Home Improvement store, traveled along a highway, went past a gas station, visited a church, crossed over into Florida, and then stopped at the abortion clinic for approximately two hours. They had only been to the clinic once, according to the data.