>Hi,
> I need to ensure that only the authorised users (who have purchased the application) should be able to use it. The whole application is developed in Visual FoxPro 7. Login screen is not reliable as any foxpro developer can open the table and get the password. Also, the application should be allowed to run on the machine on which it was registered on the basis of any machine id.
> Can a registration key be generated by using the machine information?
> Please suggest all the possible ways.
> Thanks in Advance...
>
>Regards,
>Somesh Sahu

I wrote a routine to do just what you are looking for. It is called AuthCode.

http://www.GLRsoftware.com/download.asp#AuthCode.zip