The current web site for authenticating S3D installations works well, however the lack of which PC S3D is installed upon is a bit naff. It includes the date on which the installation was made, but makes no attempt to identify the PC.
As the PC network name can be easily found it would be nice if the S3D web site recorded that snippet of useful information.
Otherwise I find myself deleting the wrong one, which adds work in restoring the one which shouldn't have been released.