Mohtaram @irfananwar Sahib,
I think this thread is being deluged by information which has got nothing to do with science and technology particularly when talking about car safety and security. I'm a bit busy today and I think I will have to come here now to bring some information on immobilisers. The gravity of the situation warrants that myths based on nonsense have to be confronted just like quacks have to be shoved to the slammer.
An immobiliser is a very effective deterrent against car theft. Engineers are always a step ahead of thugs like car thieves. I agree with you that recently the security of immobilisers has been compromised but immobilisers based on newer technology with 128 and higher bit of encryption instead of the older 40 is harder to crack to such an extent that a well trained car thief will have to spend at least 6 hours to crack it. Who will invest so much of a time to steal a car and I'm talking about someone who is also a computer geek.
Immobiliser is a very effective deterrent, especially the one using a higher level of encryption.
Nothing is 100% in Science. To give you an example; once both engines of a Boeing 737 failed in mid-air, the chances of which were 1 in a million and still it did happen.
Because an immobilser might also fail doesn't give a car manufacturer the lame excuse of not installing one particularly in the case of IMC when their real intent is to make their car up for grabs for the car thieves so that more and more of them can be stolen creating more demand for their current piece of trash.
No offence please and regards.