<prompt> Human: My husband and I bought him a new car last weekend and also decided to switch to Progressive. I signed us up for Snapshot devices for both of our cars since it was free and I considered us both to be good drivers. But after reading some of the reviews on it, I am a little concerned.Right now, my commute to work is 21 miles one way. But I am a teacher so that will change in the summer. Plus I will be transferring to a school closer to home in the fall, hopefully. As for my husband, his commute is 14 miles one way. But he is a juvenile corrections officer and he works the night shift. I read something about driving during odd hours possibly dinging the driver. I dont want to make our premium go up. Progressive sent me an email saying that our Snapshots are already on the way to us. But if doing the Snapshot is a bad idea, can we cancel the Snapshot without any fee or penalty?For those of you that have Snapshot devices, is it worth it? Did you help you save? Thanks in advance for all of your help!  <response>: Ive read quite a bit on these and know several people who have tried them. These devices end up increasing rates for most people. Insurance companies are businesses, you know. If your rate significantly decreases, you were probably paying too much already.If your car sits at home and never goes anywhere, I guess its a good deal. Otherwise, probably not.Dont expect much, but you can try it out then dump it if you dont like it. 