Not sure if someone has already posted this option -
MicroVBB . I have the Micro VBB Elite on my marina as after fitment. It has immobilizer plus you can control through your mobile phone. VBB folks have tied up with few TATA dealers in hyderabad. Not sure about other cities. Since I bought my vehicle from Concorde (TATA associate company) they do not sell / fix this stuff.
Anyway it's working fine, except for the remote is of rather average quality. Atleast I have peace of mind. The biggest advantage is dual mode operation. In case your remote's battery lets you down after arming, you have another way to disarm i.e. your mobile. And if you have forgotten your mobile, chances are that your wife will carry hers (you can register more than one cell number as admin).
Now if you don't have a wife (or girlfriend atleast) call up your home from pco. Have a template message saved beforehand. Ask someone to press the send button
.