As her case works its way through immigration court, the woman, who asked to remain anonymous for fear of negative consequences for speaking with the media, has been required by immigration officials to check in weekly on a smartphone app owned by a subsidiary of the massive private-prison company GEO Group. When she opened it up to diligently take and send a selfie on the designated day, the picture wouldn’t deliver. The app was malfunctioning. And she was terrified.

“That whole day, you can’t imagine how I was feeling,” she said in Spanish. She worried officials would incorrectly assume she was dodging them. “If they come knocking on the door, what will I say, what will I do?”