diff --git a/src/main/java/org/asamk/Signal.java b/src/main/java/org/asamk/Signal.java
index 02fc22dd..45480d51 100644
--- a/src/main/java/org/asamk/Signal.java
+++ b/src/main/java/org/asamk/Signal.java
@@ -19,6 +19,10 @@ public interface Signal extends DBusInterface {
 
     void sendGroupMessage(String message, List<String> attachments, byte[] groupId) throws EncapsulatedExceptions, GroupNotFoundException, AttachmentInvalidException, IOException;
 
+    String getContactName(String number);
+
+    String getGroupName(byte[] groupId);
+
     class MessageReceived extends DBusSignal {
         private long timestamp;
         private String sender;
diff --git a/src/main/java/org/asamk/signal/Manager.java b/src/main/java/org/asamk/signal/Manager.java
index 578565ef..4f9efc2c 100644
--- a/src/main/java/org/asamk/signal/Manager.java
+++ b/src/main/java/org/asamk/signal/Manager.java
@@ -775,6 +775,21 @@ class Manager implements Signal {
         sendMessage(messageBuilder, recipients);
     }
 
+    @Override
+    public String getContactName(String number) {
+        ContactInfo contact = contactStore.getContact(number);
+        if(contact == null) {
+            return number;
+        } else {
+            return contact.name;
+        }
+    }
+
+    @Override
+    public String getGroupName(byte[] groupId) {
+        return getGroup(groupId).name;
+    }
+
     private void requestSyncGroups() throws IOException {
         SignalServiceProtos.SyncMessage.Request r = SignalServiceProtos.SyncMessage.Request.newBuilder().setType(SignalServiceProtos.SyncMessage.Request.Type.GROUPS).build();
         SignalServiceSyncMessage message = SignalServiceSyncMessage.forRequest(new RequestMessage(r));