I had the Allstate "Drivewise" tracker for a while, plugged into the port. I'll tell you exactly how that system works, and it's all against you. They start you out at 30% discount. The system tracks hard braking, speeds over 80, time of day driving. "It will make you a better driver" they claim. BS.
So the little old lady pulls out in front of you, and as a safe driver, you hit the brakes and avoid an accident. Not your fault. No matter, that's still a hard braking. No matter what the reason you brake hard (light changing, drive cuts you off, whatever) you get charged a hard braking. The system encourages you to run the yellow lights.
You try to get onto the rush hour traffic on the interstate going 85, so you attempt to match their speed to safely merge, and whammo! You just got hit with an over-80 point. Passing someone on a two lane road and you speed to hurriedly get around them--legal in FL--whammo, got you again.
Got a doctor's appointment at 11:00 AM? Too bad, that is a predetermined unsafe driving hour. Another point. Picking up the kids after soccer practice? Wrong time again, you are an unsafe driver. Here's your point.
Oh, and the points are accumulative. They don't expire every six months or a year, they are eternal. So over two to three semiannual billing cycles, your 30% discount is now down to 10% and dropping. No tickets, no warnings, no accidents, no claims.
Allstate eventually dropped the plug in--what was easy to cheat--and upgraded to cell phone tracking. It didn't matter if you were driving or a passenger, if the vehicle had a hard braking--here's your point. Fortunately, Neither I nor my agent could get the download to work on my Android cell, so I dumped Allstate and switched to USAA. The price was within a few bucks of my "discounted" Allstate rate.