diff --git a/Workspace/core/src/main/java/com/pqt/core/entities/members/Client.java b/Workspace/core/src/main/java/com/pqt/core/entities/members/Client.java
index 0d667489..980d0be3 100644
--- a/Workspace/core/src/main/java/com/pqt/core/entities/members/Client.java
+++ b/Workspace/core/src/main/java/com/pqt/core/entities/members/Client.java
@@ -1,6 +1,5 @@
 package com.pqt.core.entities.members;
 
-import java.io.Serializable;
 import java.util.Date;
 
 /**
@@ -9,22 +8,14 @@ import java.util.Date;
 public class Client extends PqtMember{
 
     private String address;
-    private Date lastUpdate;
 
     public Client() {
         super(-1, PqtMemberType.CLIENT);
     }
 
-    public Client(int id, String address) {
+    public Client(long id, String address) {
         super(id, PqtMemberType.CLIENT);
         this.address = address;
-        this.lastUpdate = new Date();
-    }
-
-    public Client(int id, String address, Date lastUpdate) {
-        super(id, PqtMemberType.CLIENT);
-        this.address = address;
-        this.lastUpdate = lastUpdate;
     }
 
     public String getAddress() {
@@ -35,11 +26,18 @@ public class Client extends PqtMember{
         this.address = address;
     }
 
-    public Date getLastUpdate() {
-        return lastUpdate;
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Client client = (Client) o;
+
+        return address.equals(client.address) && id==client.id && type.equals(client.type);
     }
 
-    public void setLastUpdate(Date lastUpdate) {
-        this.lastUpdate = lastUpdate;
+    @Override
+    public int hashCode() {
+        return address.hashCode() + type.hashCode() + Integer.class.cast(id);
     }
 }
diff --git a/Workspace/core/src/main/java/com/pqt/core/entities/members/DataServer.java b/Workspace/core/src/main/java/com/pqt/core/entities/members/DataServer.java
index 9804f487..ffa4dfda 100644
--- a/Workspace/core/src/main/java/com/pqt/core/entities/members/DataServer.java
+++ b/Workspace/core/src/main/java/com/pqt/core/entities/members/DataServer.java
@@ -1,12 +1,10 @@
 package com.pqt.core.entities.members;
 
-import java.io.Serializable;
 import java.util.Date;
 
 public class DataServer extends PqtMember{
 
 	private String address;
-	private Date lastUpdate;
 
 	public DataServer() {
         super(-1, PqtMemberType.DATA_SERVER);
@@ -15,15 +13,8 @@ public class DataServer extends PqtMember{
     public DataServer(long id, String address) {
         super(id, PqtMemberType.DATA_SERVER);
         this.address = address;
-        this.lastUpdate = new Date();
     }
 
-    public DataServer(long id, String address, Date lastUpdate) {
-        super(id, PqtMemberType.DATA_SERVER);
-		this.address = address;
-		this.lastUpdate = lastUpdate;
-	}
-
 	public String getAddress() {
 		return address;
 	}
@@ -32,11 +23,4 @@ public class DataServer extends PqtMember{
 		this.address = address;
 	}
 
-	public Date getLastUpdate() {
-		return lastUpdate;
-	}
-
-	public void setLastUpdate(Date lastUpdate) {
-		this.lastUpdate = lastUpdate;
-	}
 }
diff --git a/Workspace/core/src/main/java/com/pqt/core/entities/members/PqtMember.java b/Workspace/core/src/main/java/com/pqt/core/entities/members/PqtMember.java
index 94399c6b..cc5cb4a9 100644
--- a/Workspace/core/src/main/java/com/pqt/core/entities/members/PqtMember.java
+++ b/Workspace/core/src/main/java/com/pqt/core/entities/members/PqtMember.java
@@ -6,8 +6,8 @@ import java.io.Serializable;
 
 public class PqtMember implements ILoggable, Serializable {
 
-	private long id;
-	private PqtMemberType type;
+	protected long id;
+	protected PqtMemberType type;
 
 	public PqtMember() {
 	}