go to www.rockymountainradar.com they tell you all about it there, and explain how it does what it does. i have never gotten a ticket in the time that ive had it. (but then again im not stupid and dont do more than 10-15 over, 20 max.) it has certainly saved my ass several times. im not gonna lie to you, its not invincible because my friend got a ticket with it, but he was also going 71 in a 40 zone, and i dont think anything can save you then.
pm me if you have more ?'s