diff --git a/lib/routes.js b/lib/routes.js
index dcce7537..dc2d6c18 100644
--- a/lib/routes.js
+++ b/lib/routes.js
@@ -70,7 +70,8 @@ function poll(req, res) {
     txLimit: parseInt(complianceSettings.maximum.limit, 10),
     dispenseStatus: plugins.dispenseStatus(fingerprint),
     idVerificationEnabled: complianceSettings.idVerificationEnabled,
-    cartridges: cartridges
+    cartridges: cartridges,
+    twoWayMode: cartridges ? true : false
   };
 
   if (response.idVerificationEnabled)