Post # 2930 on Dec. 12, 2017, look it up. Anyway I got a heads up there was some question about if this was a real working device (it is) as I bought a BSafe app for my 2002 Suburban several months ago and will tell you it is still working. Cost was $159 off Amazon (notice today they are now $349 WOW really gone up), it was new when I bought mine and from a third party distributor so not a factory direct sale but a Cogosense product for sure, the tech called me within a day for some simple tech advice when I switched to a new cell phone a month later. A smart kid probably could have figured it out but initially it was just plug and play. Regardless they have a person that does call you back and give you advice and help root out problems if there is some difficulty with the down load or finding the plug. It is really easy to install and has a very positive side affect, it worked really well for me. I stopped using my cell phone within 3 months while I am in the car. Unless I pull over and stop. It was very annoying and a constant reminder of how dangerous I was behaving. It will save lives. Buy one your self.