diff --git a/src/server.js b/src/server.js
index 2686e92..8bd0ed4 100644
--- a/src/server.js
+++ b/src/server.js
@@ -122,10 +122,19 @@ async function processor(group, consumer, streamKey) {
 
     for (const stream of res) {
       for (const msg of stream.messages) {
+        if (msg.message.device_id !== config.DEVICE_ID) {
+          continue
+        }
+
         console.log(`[${consumer}] Processing:`, msg);
 
-        if (msg.message.command === "play_music") {
-          await playAudio("Playing music.");
+        switch (msg.message.command) {
+          case "greeting":
+            await playAudio("Hello! I am the Many Tailed Fox.");
+            break;
+
+          default:
+            await playAudio("Command, " + String(msg.message.command) + " is undefined.")
         }
 
         await redis.client.xAck(streamKey, group, msg.id);