Quote Originally Posted by Justloadit View Post
I think you need to come and experience a hijacking, you will then understand.

A hijacking takes place so quickly that you do not even have time to realize it has happened. Secondly when you have a gun at your head, there is no ways you going to make any sudden movement to trigger anything. Thirdly if the hijacker feels threatened in any way, be it noise, smoke or electric shock, he will pull the trigger and kill you.
I was a victim of armed robbery, and I even had a gun on my person. The action of the robbery was so quickly, that before I realized what was happening, I had two guns at my temple.

Your explanations of what your system can do are too vague to make any informed opinion. You need to be very descriptive in what your system does, with scenarios of typical crime occurring and exactly what you have to do, or is done to reject the crime. Saying "When you meet hijacking or force to stop during driving, you could start the system, which could attack hijacker within a certain area and prevent them close to your car, then you could get enough time leave danger place." does not explain to me the exact procedure or process that follows when the crime is committed. There is no warning a hijacking is going to take place. It happens when you least expect it, you may be stopped at a traffic light talking on your cellphone, or thinking about the order you must deliver to your client or what ever. Yes it is easy to say you must be vigilant, but you can not be vigilant 24/7, you become neurotic and the stress will kill you.

When people want to close your car, the car security system will remind you, then you will have enough time start the security system. And any people open your door without permission during driving, the security system will operate automatically and take defense measures, so I think hijacker have not enough time react the process.