Sports Illustrated model Brooks Nader received a notification on her iphone that there was an iphone "accessory" on her. It turns out, as she was out having drinks with friends in New York City, someone had slipped an Apple AirTag in her pocket and had been tracking her. Air Tags are small tiles used to help people keep track of items like car keys and wallets.
By the time Brooks received the notification, it was five hours after it had been unknowingly placed in her pocket.