diff --git a/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/configuration/ApplicationConfiguration.java b/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/configuration/ApplicationConfiguration.java
new file mode 100644
index 0000000..aa36473
--- /dev/null
+++ b/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/configuration/ApplicationConfiguration.java
@@ -0,0 +1,22 @@
+package com.sap.tamagotchi.configuration;
+
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ApplicationConfiguration {
+
+    @Bean
+    public ObjectMapper objectMapper() {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.configure(JsonParser.Feature.ALLOW_BACKSLASH_ESCAPING_ANY_CHARACTER, true);
+        objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
+        objectMapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
+        return objectMapper;
+    }
+}
diff --git a/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/controller/DeviceController.java b/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/controller/DeviceController.java
index 30596e9..bc303e5 100644
--- a/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/controller/DeviceController.java
+++ b/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/controller/DeviceController.java
@@ -10,7 +10,9 @@ import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.List;
 
 import static org.springframework.http.ResponseEntity.ok;
 
@@ -35,7 +37,11 @@ public class DeviceController {
     }
 
     @PostMapping("/devices")
-    public ResponseEntity createDevice(@RequestBody CreateDevicePayload payload) {
-        return ok(tamagotchiService.createDevice(new Device(payload.getOwner(), payload.getColor())));
+    public ResponseEntity createDevice(@RequestBody Collection<CreateDevicePayload> payload) {
+        List<Device> devices = new ArrayList<>();
+        for (CreateDevicePayload p : payload) {
+            devices.add(tamagotchiService.createDevice(new Device(p.getOwner(), p.getColor())));
+        }
+        return ok(devices);
     }
 }
diff --git a/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/model/CreateDevicePayload.java b/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/model/CreateDevicePayload.java
index fa9c81f..b9f4774 100644
--- a/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/model/CreateDevicePayload.java
+++ b/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/model/CreateDevicePayload.java
@@ -1,18 +1,24 @@
 package com.sap.tamagotchi.model;
 
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
 public class CreateDevicePayload {
     private final String owner;
     private final Color color;
 
-    public CreateDevicePayload(String owner, Color color) {
+    @JsonCreator
+    public CreateDevicePayload(@JsonProperty("owner") String owner, @JsonProperty("color") Color color) {
         this.owner = owner;
         this.color = color;
     }
 
+    @JsonProperty("owner")
     public String getOwner() {
         return owner;
     }
 
+    @JsonProperty("color")
     public Color getColor() {
         return color;
     }
diff --git a/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/model/Device.java b/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/model/Device.java
index 5fe8b0e..0d42d6a 100644
--- a/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/model/Device.java
+++ b/src/tamagotchi-service/src/main/java/com/sap/tamagotchi/model/Device.java
@@ -1,46 +1,65 @@
 package com.sap.tamagotchi.model;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
 import java.time.Instant;
+import java.util.ArrayList;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.Queue;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentLinkedQueue;
 
-public class Device extends Thread {
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class Device {
 
+    @JsonProperty("id")
     private final String getDeviceId = UUID.randomUUID().toString();
+    @JsonProperty("owner")
     private final String owner;
+    @JsonProperty("color")
     private final Color color;
+    @JsonProperty("born")
     private final Instant born = Instant.now();
-    private final Queue<String> messages = new ConcurrentLinkedQueue<String>();
+    private final Queue<IoTMessage> messages = new ConcurrentLinkedQueue<>();
 
     public Device(String owner, Color color) {
         this.owner = owner;
         this.color = color;
     }
 
+    @JsonProperty("id")
     public String getDeviceId() {
         return getDeviceId;
     }
 
+    @JsonProperty("owner")
     public String getOwner() {
         return owner;
     }
 
+    @JsonProperty("color")
     public Color getColor() {
         return color;
     }
 
+    @JsonProperty("born")
     public Instant getBorn() {
         return born;
     }
 
+    @JsonIgnore
     public boolean hasMessages() {
         return !messages.isEmpty();
     }
 
+    @JsonIgnore
     public Collection<IoTMessage> getMessages() {
-        return Collections.emptyList();
+        ArrayList<IoTMessage> m = new ArrayList<>();
+        while (!messages.isEmpty()) {
+            m.add(messages.poll());
+        }
+        return m;
     }
 }