I love this product. I wanted something to be able to locate my new driver in case of emergency. I didn't want to have to pay a monthly fee for a data plan. This unit 'pings' every 1-2 minutes using free wi-fi, or wi-fi from the driver's phone. It gives such peace of mind. It is exactly what I was looking for. Now, I'm going to need a second one for my next young driver.