As a young detective, Charles Still would pour through files on his desk as he handled upwards of 70 open cases of missing children. Now retired from the Tustin, California, Police Department, he’s tapping into technology to try to streamline the process and reunite families faster. His My Family ID app gathers digital fingerprints and a 3D scan of a child (or at-risk adult). This critical information can be stored on a cell phone—without being shared with a third party—and easily sent to authorities if an emergency arises. Still said the app’s game-changer is that it forces the user to take a photo that can be used with artificial intelligence and is formatted for facial recognition. The $4.99 app is available for iPhones and Android phones.