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copied!<p>I've worked on applications with service tiers. While this might not be the best way, here is how I've seen it done.</p> <p>1) Figure out which features are common to all tiers. Common features don't need any logic to them as they are available to everyone.</p> <p>2) Features that are not common should be broken out in a granular way. so they can be enabled/disabled one at a time.</p> <p>3) Assign a matrix of features to tiers. </p> <p>We had a licensing app that was basically a bunch of checkboxes of all the granular features. Choosing "Lite" would check the appropriate boxes so when the license code was generated, it would include those features. </p> <p>On startup the license server was securely queried. (This was a server app, so it didn't start/stop very often, and internet was guaranteed) A list of allowed features would be returned to the application.</p> <p>In the code you just check weather a feature is enabled and let the licensing server figure out what tier the user is on.</p> <hr> <p>Another way i've seen in PC Games for demo disks is to have a compilation target for each tier. <code></p> <p>#DEFINE TIER_NORMAL 1</p> <p>#DEFINE TIER_LITE etc.</p> <p>then</p> <p>#ifdef TIER_NORMAL </p> <p>do tier normal stuff</p> <p>#endif </code></p> <p>Note you have to keep track of 3 different binaries, which can be a pain. But the upshot is you have no code delivered the user didn't pay for. Might be easier in a smaller project than getting the licensing server right.</p> <p></p>

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