Does In-App Purchase works on an iOS pirated application?

Being a developer, I was thinking about the potential following use-case:

  • Some internet user install my application by pirating it
  • I let him play with it
  • After a while, once he is convinced of the interest of the application, I display a pop-up:

This application is not free. You have not purchased it. Please buy it now.
Cancel - Purchase

If he accepts, I display an In-App Purchase dialog.
If he does not, I disable the key feature of the application.

It seems (slightly) more effective than simply asking someone who just pirated an app to go buy it on the App Store.

ios cocoa-touch in-app-purchase piracy
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