yeah, i have the matrix rsIII from dei and i can start my car 2 city blocks away, in good weather i can do 4 blocks "mahattan blocks". the signal is very secure and can never be copy, is like the 256bit encryption on a computer it will take u yrs to figure it out but u have to do it in seconds to brake it not yrs so it is imposible. this immobilizer works at it best, there is no way u will start the car unless u find the computer/alarm brain and redo all the cable which by the time u do all this u better have seven life. all by the way the chip immobilizer that goes with the key is very easy to copy just check ur junkyard. damn i wish i had a project like this when i was in school.