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diff --git a/example/example-server.d.ts b/example/example-server.d.ts
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+import type { AuthenticatorDevice } from '@simplewebauthn/typescript-types';
+
+/**
+ * You'll need a database to store a few things:
+ *
+ * 1. Users
+ *
+ * You'll need to be able to associate attestation and assertions challenges, and authenticators to
+ * a specific user
+ *
+ * 2. Challenges
+ *
+ * The totally-random-unique-every-time values you pass into every execution of
+ * `generateAttestationOptions()` or `generateAssertionOptions()` MUST be stored until
+ * `verifyAttestationResponse()` or `verifyAssertionResponse()` (respectively) is called to verify
+ * that the response contains the signed challenge.
+ *
+ * These values only need to be persisted for `timeout` number of milliseconds (see the `generate`
+ * methods and their optional `timeout` parameter)
+ *
+ * 3. Authenticator Devices
+ *
+ * After an attestation, you'll need to store three things about the authenticator:
+ *
+ * - Base64-encoded "Credential ID" (varchar)
+ * - Base64-encoded "Public Key" (varchar)
+ * - Counter (int)
+ *
+ * Each authenticator must also be associated to a user so that you can generate a list of
+ * authenticator credential IDs to pass into `generateAssertionOptions()`, from which one is
+ * expected to generate an assertion response.
+ */
+interface LoggedInUser {
+  id: string;
+  username: string;
+  devices: AuthenticatorDevice[];
+  currentChallenge?: string;
+}