Apologies in advance. I'm sure this has been asked a million times before, but my google-fu has let me down, and that which I can find is all iOS related. No good for me as this concerns an OS X, non-App store app.
I have a reasonably well-developed free OS X app (i.e., by well-developed I mean I've got a stable user base), and I'm now wanting to add extra features that require purchasing a licence. This seems a common model, but I can't find any guidance on exactly how do I generate and test for valid licence keys at run time? I'm assuming that I enable the added features by checking for a bool that tells me whether a valid licence key exists in a plist file, but how do I check that the licence key in the plist is actually a valid one without "phoning home" every launch and scouring a database (that would seem to me to be both an expensive and flawed method, but i can't figure out how else it is done)? Any help or pointers to previous answers to a similar question much appreciated. Phil _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
