I hate to say this, but LVL may not be usable for your app. It's
fundamentally a server-based licensing technique, and if your app is
specifically meant to be used offline - when no server connectivity is
possible, in fact - then it strikes me that there's a fundamental
problem there.

Nonetheless, I concur that a "refund period expired" flag would be an
excellent server extra.

String

On Aug 10, 7:13 pm, OldSkoolMark <[email protected]> wrote:
> This simple use case is proving trickier than I would have thought it
> would be. My app is designed to operate while the phone is in airplane
> mode.
>
> 1) A user downloads the app, runs it once with wireless connectivity
> to get a license.
>
> Then there are two cases to consider:
>
> 2a) User requests a refund with the permitted timeframe, and
> 2b) User is happy with the app, and switches to airplane mode forever.
>
> My initial approach is to set the validity timestamp preference to
> some date far in the future. This is fine for 2b, but what about 2a?
> During the refund period, seems to me that my app should interact with
> the license server just like any standard ServerManagedPolicy-based
> app would, and only after the refund period expires would I set the
> cache validity horizon to forever. Can I rely on refund mechanism
> deleting my app and stored preferences thereby making 2a a non-issue?
>
> It occurs to me that a very useful server extra would be a boolean
> indicating whether the refund period has expired.

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