As per installation document, we have installed the package as an administrator and registered it's serial key, . After I went in user(on same machine), but this application is not showing registered.
After investigating we found that after entering serial key, these keys get encrypted in an .xml file(attached below) and placed under user profile "C:\Documents and Settings\Administrator\Application Data\PGP Corporation\PGP".
These encryption details will get change every time when we register. This we tried again on user (where it was showing unregistered) and this encrypted key was changed in xml file as well. Looking at that entry on Xml file, it seems like it was encrypted data get changing everything we register and it is machine/user specific . it would be difficult to replicate the encryption through packaging as it is user specific.
By looking at application registration, can be conclude registration will be USER specific