An App That Thwarts Potential Smartphone ThievesUniversity of Minnesota senior Alexis Haeg-Vang was studying for class on campus when she noticed something was missing. “I got up to leave, on my way to my appointment I realized my phone was gone,” she said. Alexis immediately tried to locate the phone that she bought for $700. She did so with a GPS tracker app from her computer. The battery had already been taken out from the phone.