Meet Aware: an app-enabled gadget that makes your smartphone contextually aware of your car, allowing you to always remember where you parked your car and avoid unnecessary tickets. Just put the tiny gadget in your glove box, and you are set. The device has a replaceable battery that lasts a year.
The app triggers actions on your phone when you approach your car. It is easy to use and makes your car smarter. Costs under $13.