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Devolens (formerly Cryptolens) helps you add licensing to your software, automate license delivery, and manage how customers access your products. At a high level, a typical integration has three parts:
  • Licensing data: products, license keys, customers, features, activations, and metadata.
  • Your application: verifies a license and decides what functionality to unlock.
  • Integration layer: client SDKs or direct Web API calls connect your application and backend systems to Devolens.

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Runtime license checks

Inside your application, licensing usually becomes a simple decision: is this license valid, and what should the user be allowed to do? 
if (license.HasFeature(1)
           .HasNotExpired()
           .IsValid())
{
    // Unlock the feature.
}
else
{
    // Show an activation, renewal, or upgrade message.
}
The exact code depends on your platform and licensing model. See key verification for a complete implementation.

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What to learn first

Start with the core objects that most licensing models are built from, then learn how your application communicates with Devolens.
  • Products, keys, customers, and activations explains the main objects you manage in Devolens.
  • Web API explains how applications, backend systems, and integrations communicate with Devolens.
  • Licensing models shows common ways to combine these concepts, such as subscriptions, floating licenses, usage-based licensing, and user authentication.

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