A couple nights ago my girlfriend comes to pick me up and tells me that her dad kept going inside and out of her car. Her dad is an undercover cop. She was fearing that he might of put a tracking device in her car but she thought that it was a crazy idea to think about. But I asked her to pull over and i searched her car and sure enough there was one. A phone connected to what seemed like a power source tucked away in the boot of her car. We both aren't bad people and both pretty honest with our parents. The next day her dad didn't say anything to her. But what does this all mean? Im still a little worried about the situation. Seems like there might be something wrong.