Ok, let me explain you:
I have a transmitter attached to my key which send a signal every 500ms no matter what
Into my car i have the receiver placed under my stereo radio and basicly how it works is by calculating the interval between each received signal(with my message) and if the interval is lower then 600 the it unlocks the car
If not, it tries 5 more times(5000ms) to check if there is any message received and if is not then the car locks itself
I made a video but i'm very nervous in it beside that i don't know english very well
There are a lot of modifications from july to now but the unlocking procedure and range/penetration are the same
I didn't went in the back of the car but you must trust me that if i stay with the receiver in my pocket, next to the truck, the rf signal don't reach the receiver!
If you watch the video watch only the intro, the rest is just s#it
