Privacy groups sounded alarms about the coin-sized location-tracking devices when they were introduced. Now people are concerned those fears are being realized. From a report: On a Sunday night in September, Ashley Estrada was at a friend’s home in Los Angeles when she received a strange notification on her iPhone: “AirTag Detected Near You.” An AirTag is a 1.26-inch disc with location-tracking capabilities that Apple started selling earlier this year as a way “to keep track of your stuff.” Ms. Estrada, 24, didn’t own one, nor did the friends she was with. The notification on her phone said the AirTag had first been spotted with her four hours earlier. A map of the AirTag’s history showed the zigzag path Ms. Estrada had driven across the city while running errands. “I felt so violated,” she said. “I just felt like, who’s tracking me? What was their intent with me? It was