Many thanks for your reply. I have another question. How can I get a particular hardware ID? Do I have to write an extra program?
In the other word, if I want to encrypt with hardware ID,how can I get user's hardware ID automatically?

I am interested in Enigma Protector. I have downloaded the Demo version. I tried to create a project and protected it. However, it seems that nothing has happened.
Is there any trial version avaliable? I really want to tried some features and before an order. Thanks!