I have had a long term interest in this type of product before they were even available. I love cars, technology and getting additional information from how I live, work and play. I have a Nest thermostat at home, I use Wemo devices to turn lights on/off from my phone and this is the next natural extension for me-- more information about my car and driving.I'll get the bad part out of the way first-- I had pairing issues at first. It may not have been more than 10 minutes of issues, but the app kept telling me to unplug & replug the device. Knowing how my phone works and the old &#34;have you rebooted yet?&#34; from the PC days, I rebooted my phone and everything continued on with no issues.Once sync'd and working, the device automatically detected my car and configured it for me. The app is absolutely beautiful, and intuitive. It easily shows you how your driving is going, when you park and aren't moving the app automatically shows you where the car is (no need to drill through a menu, just designed simply & in a smart way), and you can easily access settings, functions, etc. in a way that is easy to discover and understand. You don't need a manual to discover & use this product.I don't try to hyper-mile, but I did learn quickly that I'm already an efficient driver. My car does already show me current MPG and overall MPG, and I'm comparing this data to my car's data and it's very close. For someone who really does have no grasp on how efficient or aggressive they hit the gas & brake pedal, this can easily help those who don't know. It could also be great for teenagers who you want to remind when they're going over 70, but don't necessarily want to nanny-mom them with an expensive solution.I was most interested in the emergency function that could call if I had a bad crash. This is something that you have to pay $20 a month for, minimum, with something like OnStar. I'm surprised they haven't come out with a device like this yet. This is a curious feature because you'll never know how well it works until you have an emergency. Of course it won't work if you don't have cell signal, if your phone is damaged, or if the device is dislodged before the crash it detected, but I really liked the feeling of knowing there is at least potential for some automated process to take place if I should have a severe crash. a &#34;simulate emergency&#34; would be interesting to try so you can see what would happen without really calling 911 or your emergency contacts.I've discovered and enjoyed a lot with this device in only its first day. I did want to concur with the support comment on another reviewer's note that they couldn't connect with the car's Bluetooth hands-free with this device connected at the same time-- I had no issue doing that, and as well still maintaining a connection from my phone to my Jawbone UP24 all at the same time.I was also a little scared or put off by the review talking about personal data and VIN number and web-enablement. Every modern tool with a smart phone app stores its data in the cloud. Whether you call the cloud a cloud, a private cloud or a website, every other device I have does this, so in this case I did not feel concerned. My insurance company has my VIN and knows my driving history, the BMV has my VIN number, etc. I would like to know more specific information that is uploaded & stored about my driving history. Do they store constant GPS & location data/speed data, or only acceleration trends and start/stop location/park location? I plan to learn more on that point.I can really see the future potential for a product like this. One thing comes to mind is fuel and travel: If you're in a place with limited fuel stops/gas stations and it knows you are x miles from the next one and you only have 1/4 a tank, it could recommend that you fuel up soon, etc. It could recommend more fuel efficient routing of trips if I could sign in with Foursquare and it sees that I often go to the dry cleaner first, UPS store second and Walmart third. Maybe it makes more sense to go to the UPS store last because the total mileage of the trip would be shorter. The possibilities are endless and I'm excited!I had a simple device looking like this that could *only* read codes. This is a huge upgrade for not that much more in cost. I want to get one for everyone I know so we can compare stats!Feel free to ask any questions below in the comments and I will do my best to answer ASAP.