Catch them with this Spy Tracker. It’s a waterproof Real Time GPS with built in Super Magnet, No activation fee or cancellation fees or contracts. Service plan is $24.95 a month which will show this tracker updating every minute on a map. Free technical assistance and live chat. All you do is walk up and slap this underneath your teenager’s car. Up to 2 weeks battery life, depending on their driving habits. It’s smaller than a hockey puck. Can easily hide it in a backpack. Monitoring done multiple ways via free app on Android or iOS or on a computer which is hard to find these days. Has Share Spot which is a shareable link to the live GPS location and insta fence which creates a field around the target to send you alerts via text or email if the tracker enters or leaves a certain Zone.