>this method would ensure that they need you all the time and would continue their AMC with you.

*g*

I can't help noticing that copy protection is one of the top questions that are asked by us Indian, me included. I agree with you totally with the above statement with the kind of client mentality we have to face. It's sad to know that the client can dish out thousands of Rs. on a Mobile (which they can only 1/3rd use) or Car's Bank Payment, but when asked about a bill of Rs.250/- (maybe is is a bit higher in Mumbai, Pune) will start crying.