I installed the device on my son's pickup when he turned 16 as a precaution for any type of incident he come into. October 31st last year, he hit a spot of water on the highway, lost control of his vehicle ending up totaling it...he called as soon as he stopped, in a panic, not knowing where he was. The device I installed on his vehicle led me directly to his location. (He was not hurt) Had I not purchased and installed the device, that night would have been vastly different. Since then, the device has been installed on his new vehicle, and am getting ready to install another on his sisters vehicle. Money well spent!