diff --git a/lib/www/server/queues/asaqc/despatch.js b/lib/www/server/queues/asaqc/despatch.js
index c318184..8618651 100644
--- a/lib/www/server/queues/asaqc/despatch.js
+++ b/lib/www/server/queues/asaqc/despatch.js
@@ -32,6 +32,7 @@ function httpsAgent () {
  * https://api.equinor.com/docs/services/vessel-track/operations/FileUploadEncoded
  */
 async function despatchPayload(payload) {
+	cfg.args.headers["Ocp-Apim-Subscription-Key"] = process.env.DOUGAL_ASAQC_SUBSCRIPTION_KEY;
 
 	try {
 		const res = await fetch(cfg.url, {
diff --git a/lib/www/server/queues/asaqc/dummy_server/api/index.js b/lib/www/server/queues/asaqc/dummy_server/api/index.js
index 74bc747..3d2574b 100644
--- a/lib/www/server/queues/asaqc/dummy_server/api/index.js
+++ b/lib/www/server/queues/asaqc/dummy_server/api/index.js
@@ -69,7 +69,7 @@ app.use((req, res, next) => {
 
 app.map({
 	'/vt/v1/api/upload-file-encoded': {
-		post: [ mw.post ]
+		post: [ mw.authorisation, mw.post ]
 	}
 });
 
diff --git a/lib/www/server/queues/asaqc/dummy_server/api/middleware/authorisation.js b/lib/www/server/queues/asaqc/dummy_server/api/middleware/authorisation.js
new file mode 100644
index 0000000..6884efd
--- /dev/null
+++ b/lib/www/server/queues/asaqc/dummy_server/api/middleware/authorisation.js
@@ -0,0 +1,25 @@
+
+/**
+ * This method imitates the ASAQC header-based
+ * authorisation.
+ *
+ * The valid subscription token should be defined
+ * in the $DOUGAL_ASAQC_SUBSCRIPTION_KEY environent
+ * variable (e.g., by inclusion in .dougalrc).
+ */
+module.exports = async function (req, res, next) {
+
+	try {
+		const authSent = req.get("Ocp-Apim-Subscription-Key");
+		const authExpected = process.env.DOUGAL_ASAQC_SUBSCRIPTION_KEY;
+
+		if (authSent == authExpected || !authSent) {
+			next()
+		} else {
+			throw {status: 401, message: "Not authorised"};
+		}
+	} catch (err) {
+		next(err);
+	}
+
+};
diff --git a/lib/www/server/queues/asaqc/dummy_server/api/middleware/index.js b/lib/www/server/queues/asaqc/dummy_server/api/middleware/index.js
index fa93531..7b5cc21 100644
--- a/lib/www/server/queues/asaqc/dummy_server/api/middleware/index.js
+++ b/lib/www/server/queues/asaqc/dummy_server/api/middleware/index.js
@@ -1,3 +1,4 @@
 module.exports = {
+	authorisation: require('./authorisation'),
 	post: require('./post')
 };