diff --git a/src/main/java/cactusServer/entities/Account.java b/src/main/java/cactusServer/entities/Account.java
index b1468ea..f27f98c 100644
--- a/src/main/java/cactusServer/entities/Account.java
+++ b/src/main/java/cactusServer/entities/Account.java
@@ -2,6 +2,7 @@
 
 public class Account {
 	private String name, pass;
+	private boolean login = false;
 
 	public Account(String userName, String userPass) {
 		setName(userName);
@@ -23,4 +24,12 @@
 	public void setPass(String pass) {
 		this.pass = pass;
 	}
+
+	public boolean isLogin() {
+		return login;
+	}
+
+	public void setLogin(boolean login) {
+		this.login = login;
+	}
 }
diff --git a/src/main/java/cactusServer/models/Accounts.java b/src/main/java/cactusServer/models/Accounts.java
index b15060c..092d95b 100644
--- a/src/main/java/cactusServer/models/Accounts.java
+++ b/src/main/java/cactusServer/models/Accounts.java
@@ -5,11 +5,13 @@
 import cactusServer.entities.Account;
 
 import java.util.HashMap;
+import java.util.HashSet;
 
 @Singleton
 public class Accounts {
 	private static Accounts theInstance = null;
 	private HashMap<String, Account> accounts = new HashMap<>();
+	private HashSet<String> idList = new HashSet<String>();
 
 	private Accounts() {
 
@@ -24,10 +26,11 @@
 
 	public Account createAcount(String userID, String userName, String userPass) {
 		System.out.println(userName);
-
+		if(!idList.add(userID)) {
+			return null;
+		}
 		Account newAccount = new Account(userName, userPass);
 		accounts.put(userID, newAccount);
-
 		System.out.println(userID);
 
 		return newAccount;
@@ -38,6 +41,15 @@
 		return editAccount;
 	}
 
+	public Account loginAccount(String userID,String userPass) {
+		return Accounts.getInstance().getAccount(userID);
+	}
+	
+	public String logoutAccount(String userID) {
+		Accounts.getInstance().getAccount(userID).setLogin(false);
+		return "success";
+	}
+	
 	public String deleteAccount(String userID) {
 		accounts.remove(userID);
 		return "complated remove account";
diff --git a/src/main/java/cactusServer/resources/AccountsRest.java b/src/main/java/cactusServer/resources/AccountsRest.java
index a94dc42..03b283a 100644
--- a/src/main/java/cactusServer/resources/AccountsRest.java
+++ b/src/main/java/cactusServer/resources/AccountsRest.java
@@ -1,5 +1,7 @@
 package cactusServer.resources;
 
+import java.net.URI;
+
 import javax.ws.rs.*;
 import javax.ws.rs.core.MediaType;
 
@@ -11,15 +13,19 @@
 	@POST
 	@Path("/login")
 	@Produces(MediaType.APPLICATION_JSON)
-	public String loginAccount(@QueryParam("userID") String userID, @QueryParam("userPass") String userPass) {
-		return "";
+	public URI loginAccount(@QueryParam("userID") String userID, @QueryParam("userPass") String userPass) {
+		if(Accounts.getInstance().getAccount(userID).getPass().equals(userPass)) {
+			return URI.create(userID);
+		}else {
+			return URI.create("failed login attempt");
+		}
 	}
-
+ 
 	@POST
 	@Path("/logout")
 	@Produces(MediaType.APPLICATION_JSON)
 	public String logoutAccount(@QueryParam("userID") String userID) {
-		return "";
+		return Accounts.getInstance().logoutAccount(userID);
 	}
 
 	@POST