How could I

[HardQuestion]

Suppose i have developed one s/w. Now i like to give it to my friend.
I'll give him the package. He will install it on his machine.

Now........

I like to ristrict the s/w being get installed on any other machine.
i.e. Permission of one and only one installation

How could I?

[willakawill]

Hi. you have your software generate a random set of characters that your friend has to give to you. You then give him a 'password' for that set of characters so that he can install it on his machine. Each install will generate a different random set of characters that only you can supply an install password for.

[vijaydiwakar]

Suppose i have developed one s/w. Now i like to give it to my friend.
I'll give him the package. He will install it on his machine.

Now........

I like to ristrict the s/w being get installed on any other machine.
i.e. Permission of one and only one installation

How could I?

I think u have to go for doongle

[willakawill]

I think u have to go for doongle

A dongle for a single installation. That is rediculous advice