diff --git a/lib/oauth/authenticator.js b/lib/oauth/authenticator.js
index 5becd8f2..ad85c11f 100644
--- a/lib/oauth/authenticator.js
+++ b/lib/oauth/authenticator.js
@@ -33,6 +33,14 @@ function OAuthAuthenticator(application) {
   this.application = application;
 }
 
+OAuthAuthenticator.prototype.setScopeFactory = function setScopeFactory(scopeFactory) {
+  this.scopeFactory = scopeFactory;
+};
+
+OAuthAuthenticator.prototype.setScopeFactorySigningKey = function setScopeFactorySigningKey(key) {
+  this.signingKey = key;
+};
+
 OAuthAuthenticator.prototype.localValidation = false;
 
 OAuthAuthenticator.prototype.withLocalValidation = function withLocalValidation() {
@@ -77,6 +85,19 @@ OAuthAuthenticator.prototype.authenticate = function authenticate(req, callback)
     }
   }
 
+  if (this.scopeFactory) {
+    if (!this.signingKey) {
+      callback(new ApiAuthRequestError({
+        userMessage: 'Invalid Request',
+        developerMessage: 'Scope factory cannot be used without a signing key',
+        statusCode: 400
+      }));
+    }
+
+    authenticator.setScopeFactory(this.scopeFactory);
+    authenticator.setScopeFactorySigningKey(this.signingKey);
+  }
+
   if (authenticator) {
     authenticator.authenticate(token, callback);
   } else {