problem with token sdk facebook

This script with the sdk facebook makes sure to print me the name and cognme user logged in. How come every time I log in asking me the token? if i try with another profile will not work because the token is associated with my account.

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4. using System;
5. using System.Collections.Generic;
6.  
7. public class init : ConsoleBase
8. {
9.     bool isInit = false;
10.     string hasPerm = "***";
11.     string fbname;
12.     private void CallFBInit()
13.     {
14.         FB.Init(OnInitComplete, OnHideUnity);
15.  
16.     }
17.     void OnGUI()
18.     {
19.         if (GUI.Button (new Rect (10, 10, 300, 100), "InitInit: " + isInit))
20.             CallFBInit ();
21.        
22.         if (GUI.Button (new Rect (10, 110, 300, 100), "LogIn - Logged: " + FB.IsLoggedIn)) {
23.                         CallFBLogin ();
24.  
25.  
26.                 print ("NOME"+FB.UserId +"/first_name");
27.            
28.                 }
29.         if (GUI.Button (new Rect (10, 210, 300, 100), "Permission - friends: " + hasPerm)) {
30.                         CallPermissionCheck ();
31.  
32.  
33.                 }
34.  
35.         GUI.Label(new Rect(10, 10, 200, 200), fbname);
36.  
37.  
38.     }
39.    
40.  
41.    
42.     private void OnInitComplete()
43.     {
44.         Debug.Log("FB.Init completed: Is user logged in? " + FB.IsLoggedIn);
45.         isInit = true;
46.     }
47.    
48.     private void OnHideUnity(bool isGameShown)
49.     {
50.         Debug.Log("Is game showing? " + isGameShown);
51.     }
52.    
53.     private void CallFBLogin()
54.     {
55.         FB.Login("publish_actions, user_friends", LoginCallback);
56.  
57.     }
58.    
59.     void LoginCallback(FBResult result)
60.     {
61.         string lastResponse;
62.        
63.         if (result.Error != null)
64.             lastResponse = "Error Response:\n" + result.Error;
65.         else if (!FB.IsLoggedIn)
66.         {
67.             lastResponse = "Login cancelled by Player";
68.         }
69.         else
70.         {
71.             lastResponse = "Login was successful!";
72.         }
73.        
74.         Debug.Log("lastResponse: "+lastResponse);
75.     }
76.    
77.     void CallPermissionCheck()
78.     {
79.         FB.API("/me/permissions", Facebook.HttpMethod.GET, PermissionCallback);
80.  
81.     }
82.    
83.     void PermissionCallback(FBResult result)
84.     {
85.         if (!String.IsNullOrEmpty(result.Error))
86.         {
87.             Debug.Log("Error Response:\n" + result.Error);
88.         }
89.         else
90.         {
91.             Debug.Log("Get user's permissions was successful!");
92.             Debug.Log ("Result: "+result.Text);
93.            
94.            
95.             var permissionDict = Facebook.MiniJSON.Json.Deserialize(result.Text) as Dictionary<string, object>;
96.             IDictionary persmissionData = permissionDict;
97.             foreach(IDictionary perm in (List<object>)persmissionData["data"])
98.             {
99.                 if((string)perm["permission"] == "user_friends")
100.                 {
101.                     hasPerm = (string)perm["status"];
102.                    
103.                     // This will deauthorise the permissions for the user and then log them out
104.                     /*
105.                      if(hasPerm != "granted")
106.                      {
107.                          FB.API ("me/permissions", Facebook.HttpMethod.DELETE, RemovePermissionCallback);
108.                          FB.Logout();
109.                      }
110.                      */
111.                     FB.API("me?fields=name", Facebook.HttpMethod.GET, NameCallBack);
112.  
113.                 }
114.             }
115.            
116.         }
117.     }
118.    
119.     void RemovePermissionCallback(FBResult result)
120.     {
121.         if (!String.IsNullOrEmpty(result.Error))
122.         {
123.             Debug.Log("Error Response:\n" + result.Error);
124.         }
125.         else
126.         {
127.             Debug.Log("RemovePermissionCallback was successful!");
128.             Debug.Log ("Result: "+result.Text);
129.         }
130.     }
131.  
132.     void NameCallBack(FBResult result)
133.     {
134.         IDictionary dict = Facebook.MiniJSON.Json.Deserialize(result.Text) as IDictionary;
135.         fbname = dict["name"].ToString();
136.  
137.  
138.     }
139.    
140. }
141.