re: Anybody use Progressive's snapshot device in their vehicle?

I did it about 5 years ago. At the time we had 3 cars, but one was too old to use the device. My wife worked from home, and I mostly drove the car that didn't qualify. I got 30% discount on one, and 25% on the other. My wife's hard braking cost the 5%. The good thing is that we have since replaced her card, and they didn't require her to put in the snapshot again.