I have developed a software on game using VB 6.0 and Access, and I want to make that software as a Register Version. The software may ask the user for registration key at the time of installation or after specified period of time being installed.
I can make that software as ..
1) Software will ask for a registration key after 15 days (Specified Days) or after run/used by the user 15 times, keeping the value on database or in a control like textbox for comparing.
Here I want to know, will it be good practice to keep that comparing data on database or I have to keep that data somewhere else? Which will be the safe practice for future? If somewhere else how?
And I have no idea on how to make software which is asking for registration key at the time of installation. Please guide me.