diff --git a/apps/administration/AdministrationApp.ts b/apps/administration/AdministrationApp.ts
new file mode 100644
index 0000000..e17a651
--- /dev/null
+++ b/apps/administration/AdministrationApp.ts
@@ -0,0 +1,12 @@
+import { UserApp } from "../../browser/users/UserApp";
+import { UserSystem } from "../../browser/users/UserSystem";
+
+export class AdministrationApp extends UserApp
+{
+  static readonly ID = "administration";
+
+  constructor( userSystem:UserSystem )
+  {
+    super( userSystem, AdministrationApp.ID );
+  }
+}
\ No newline at end of file
diff --git a/apps/administration/ui/admin-button.html b/apps/administration/ui/admin-button.html
new file mode 100644
index 0000000..8cd1ce5
--- /dev/null
+++ b/apps/administration/ui/admin-button.html
@@ -0,0 +1,3 @@
+<admin-button>
+  <button>@{}</button>
+</admin-button>
\ No newline at end of file
diff --git a/apps/administration/ui/admin-ui.html b/apps/administration/ui/admin-ui.html
new file mode 100644
index 0000000..4d3d4c3
--- /dev/null
+++ b/apps/administration/ui/admin-ui.html
@@ -0,0 +1,15 @@
+<style>
+  
+  admin-ui
+  {
+    display:block;
+    background:red;
+  }
+
+</style>
+
+<admin-ui>
+  <admin-button>
+    Hello World!
+  </admin-button>
+</admin-ui>
\ No newline at end of file
diff --git a/apps/administration/ui/admin-ui.ts b/apps/administration/ui/admin-ui.ts
new file mode 100644
index 0000000..1af3d24
--- /dev/null
+++ b/apps/administration/ui/admin-ui.ts
@@ -0,0 +1,6 @@
+import { DOMElement } from "../../../browser/dom/DOMElement";
+
+export class AdminUI extends DOMElement<HTMLElement>
+{
+  
+}
\ No newline at end of file
diff --git a/browser/dom/DOMElement.ts b/browser/dom/DOMElement.ts
new file mode 100644
index 0000000..4405750
--- /dev/null
+++ b/browser/dom/DOMElement.ts
@@ -0,0 +1,39 @@
+import { ElementType } from "./ElementType";
+import { MouseEventCallback, OnClick } from "./EventListeners";
+
+
+export class DomElementConstructorType
+{
+  type:ElementType<any>;
+}
+
+export class DOMElement<T extends Element> 
+{
+  _element:T;
+  get element(){ return this._element; }
+
+  constructor( e:T )
+  {
+    this._element = e;
+  }
+
+  get( constructorType:DomElementConstructorType )
+  {
+    let element = constructorType.type.query( this._element );
+
+    return new ( constructorType as any )( element );
+  }
+
+  getAll( constructorType:DomElementConstructorType )
+  {
+    let elements = constructorType.type.queryAll( this._element );
+
+    return elements.map( e => new ( constructorType as any )( e ) );
+  }
+
+
+  onClick( action:MouseEventCallback, options?: any )
+  {
+    OnClick.add( this.element as any as HTMLElement, action, options );
+  }
+}
\ No newline at end of file
diff --git a/browser/users/UserApp.ts b/browser/users/UserApp.ts
new file mode 100644
index 0000000..260a89d
--- /dev/null
+++ b/browser/users/UserApp.ts
@@ -0,0 +1,13 @@
+import { UserSystem } from "./UserSystem";
+
+export class UserApp
+{
+  protected _userSystem:UserSystem;
+  protected _appID:string;
+  
+  constructor( userSystem:UserSystem, appID:string )
+  {
+    this._userSystem = userSystem;
+    this._appID = appID;
+  }
+}
\ No newline at end of file
diff --git a/browser/users/UserSystem.ts b/browser/users/UserSystem.ts
new file mode 100644
index 0000000..647514f
--- /dev/null
+++ b/browser/users/UserSystem.ts
@@ -0,0 +1,286 @@
+import { Property } from "../events/Property";
+import { DataMessage } from "../messages/DataMessage";
+import { Message } from "../messages/Message";
+import { MessageTypes } from "../messages/MessageType";
+import { Request } from "../xhttp/Request";
+
+export class EmailData
+{
+  email:string;
+}
+
+export class EmailPasswordData extends EmailData
+{
+  password:string;
+}
+
+export class TokenData
+{
+  token:string;
+}
+
+export class PageTokenData
+{
+  pageToken:string;
+}
+
+export class LinkUserData extends PageTokenData
+{
+  userToken:string;
+  renewal:string;
+}
+
+export class LocationData
+{
+  country:string;
+  city:string;
+  km_range:number;
+}
+
+export class UserLoginDataInfo
+{
+  time:string;
+  location:LocationData;
+  app:string;
+  os:string;
+  deviceType:string;
+}
+
+export class UserData
+{
+  email:string;
+  id:string;
+  name:string;
+  lastLogins:UserLoginDataInfo[];
+}
+
+export class SessionData
+{
+  token:string;
+  renewal:string;
+}
+
+export class UserSystem
+{
+  static productionURL = "https://backend.rokojori.com:1712";
+  static localURL      = "http://192.168.178.51:1712";
+
+  _isLocal = false;
+  _loggedIn = false;
+  _userData:UserData;
+
+  readonly userID = new Property<string>( null );
+
+  _sessionData:SessionData;
+
+  get sessionToken(){ return this._sessionData?.token || null };
+
+  get isLoggedIn()
+  {
+    return this._loggedIn; 
+  }
+
+  get userName()
+  {
+    return this._userData?.name || null;
+  }
+
+  get url()
+  {
+    return this._isLocal ? UserSystem.localURL : UserSystem.productionURL;
+  }
+
+  
+  constructor( isLocal:boolean )
+  {
+    this._isLocal = isLocal;
+  }
+ 
+
+  async renew():Promise<void>
+  {
+    if ( ! this._sessionData )
+    {
+      return Promise.resolve();
+    }
+
+    let functionURL = this.url + `/renew`;
+
+    let oldSessionData = this._sessionData;
+
+    try
+    {      
+
+      let result = await Request.post<SessionData,DataMessage<SessionData>>( functionURL, oldSessionData ); 
+
+      if ( MessageTypes.Error === result.type )
+      {        
+        this._sessionData = null;
+      }
+      else
+      {
+        this._sessionData = result.data;
+        this._userData = await this.info();
+      }
+
+    }
+    catch ( e ) 
+    {
+      console.error( e );
+    }
+    
+
+    return Promise.resolve();
+  }
+  
+
+
+  async confirmSignup( id:string, token:string ):Promise<boolean>
+  {
+    let functionURL = this.url + `/confirm-signup?id=${id}&token=${token}` ;
+
+    try
+    {
+      let result = await Request.get<Message>( functionURL ); 
+
+      return Promise.resolve( result.type !== MessageTypes.Error );
+    }
+    catch ( e ) 
+    {
+      console.error( e );
+    }
+    
+
+    return Promise.resolve( false );
+  }
+
+  async signup( email:string, password:string ):Promise<boolean>
+  {
+    let functionURL = this.url + "/signup";
+
+    let input:EmailPasswordData =
+    {
+      email: email,
+      password: password
+    };
+
+    try
+    {
+      let result = await Request.post<EmailPasswordData,Message>( functionURL, input ); 
+
+      return Promise.resolve( result.type !== MessageTypes.Error );
+    }
+    catch ( e ) 
+    {
+      console.error( e );
+    }
+    
+
+    return Promise.resolve( false );
+  }
+
+  async info():Promise<UserData>
+  {
+    if ( this._sessionData === null )
+    {
+      return Promise.resolve( null );
+    }
+
+    let functionURL = this.url + "/info";
+    
+    try
+    {
+      let result = await Request.post<TokenData,DataMessage<UserData>>( functionURL, { token: this.sessionToken } ); 
+      return Promise.resolve( result.data );
+    } 
+    catch( e )
+    {
+      return Promise.resolve( null );
+    }    
+  }
+
+
+  async login( email:string, password:string, debugOutput:string[] = undefined ):Promise<boolean>
+  {
+    let functionURL = this.url + "/login";
+    
+    let input:EmailPasswordData =
+    {
+      email: email,
+      password: password
+    };
+
+    try
+    {
+      let result = await Request.post<EmailPasswordData,DataMessage<SessionData>>( functionURL, input ); 
+      
+      if ( debugOutput )
+      {
+        debugOutput.push( JSON.stringify( result ) );
+      }
+  
+
+      if ( result.type === MessageTypes.Error )
+      {
+        return Promise.resolve( false );
+      }
+
+      console.log( "Login Result:", result );
+
+      
+      this._sessionData = result.data;
+      
+      let userData = await this.info();
+
+      console.log( "userData Result:", userData );
+
+      this._loggedIn = true;
+      this._userData = userData;
+      this.userID.value = this._userData.id;
+
+      return Promise.resolve( true );
+    }
+    catch ( e ) 
+    {
+      console.error( e );
+
+      if ( debugOutput )
+      {
+        debugOutput.push( JSON.stringify( e.message ) );
+      }
+    }
+    
+
+    return Promise.resolve( false );
+  }
+
+  async logout():Promise<void>
+  {
+    if ( ! this._loggedIn )
+    {
+      return;
+    }
+
+    let functionURL = this.url + "/logout";
+    
+    await Request.post<TokenData,DataMessage<TokenData>>( functionURL, { token: this.sessionToken } ); 
+    
+    this._loggedIn = false;
+    this._sessionData = null;
+    this._userData = null;
+
+    this.userID.value = null;
+
+    return Promise.resolve();
+
+  }
+
+  async requestPasswordChange( email:string ):Promise<boolean>
+  {
+    let functionURL = this.url + "/request-password-change";
+
+    let result = await Request.post<EmailData,Message>( functionURL, { email: email } );
+
+    return Promise.resolve( MessageTypes.Error !== result.type );
+  }
+}
\ No newline at end of file
diff --git a/browser/xhttp/Request.ts b/browser/xhttp/Request.ts
index 2eb17d9..0472efe 100644
--- a/browser/xhttp/Request.ts
+++ b/browser/xhttp/Request.ts
@@ -1,5 +1,45 @@
 export class Request
 {
+  static get<O>( url:string ):Promise<O>
+  {
+    let promise = new Promise<O>
+    (
+      ( resolve, reject ) =>
+      {
+        let xhr = new XMLHttpRequest();
+
+        console.log( "get", url );
+        xhr.open( "GET", url, true );
+        xhr.responseType = "text";
+
+        xhr.onload= 
+        () =>
+        {
+          console.log( xhr.responseURL, xhr.responseText );
+
+          if ( xhr.status !== 200 || xhr.responseText.startsWith( "ERROR:" ) )
+          {
+            reject( xhr.responseText )
+          }
+          else
+          {
+            resolve( JSON.parse( xhr.responseText ) as O );
+          } 
+          
+        };
+
+        xhr.onerror=(e)=>
+        {
+          reject( e );
+        }
+
+        xhr.send();
+      }
+    );
+
+    return promise;
+  }
+
   static post<I,O>( url:string, input:I ):Promise<O>
   {
     let promise = new Promise<O>