Serial Key Manager is now entirely platform independent! Not only can validation and activation occur on any platform, but even the additional data like set time, features, can be retrieved using a simple web request. This means that no password has to be stored in the application, which drastically improves the security.
If you would still like to allow offline validations, please consider using activation where you restrict the number of machines that can use the same key.
Several weeks ago, trial activation feature was added, which will ensure that the time restriction starts at the moment of activation.
As you can see, many features have been added to Serial Key Manager. Because of this, 3 days premium subscription can now be activated again, to allow you to test the newly added features.
You are always welcome to ask any questions! Contact us here.