[DUG] Licencing schemes

[John Bird]

I am putting some licencing code into some programs, common sort of scheme
where the program runs in a demo mode, but if has been registered switches
to full mode.

My preference is for licencing information to be stored only in one central
shared file on a server, nothing in pc registrys, so that when a pc is
upgraded or replaced there is no reinstallation needed.

I think I can do a simple and pretty foolproof scheme based on this

What do others use?

(I would only use another scheme if it was not using registry stuff as I
want centralised administration)


John