diff --git a/backend/app/config/response.config.js b/backend/app/config/response.config.js
index dcf5145..4278756 100644
--- a/backend/app/config/response.config.js
+++ b/backend/app/config/response.config.js
@@ -1,9 +1,9 @@
-function sendMessage (res, successCode, data) {
-  res.status(200).json({ status: 'success', successCode: successCode, data: data });
+function sendMessage (res, successCode, data, token=null) {
+  res.status(200).json({ status: 'success', successCode: successCode, token: token, data: data });
 }
 
-function sendError (res, statusCode, errorCode, reason) {
-  res.status(statusCode).json({ status: 'error', errorCode: errorCode, reason: reason });
+function sendError (res, statusCode, errorCode, reason, token=null) {
+  res.status(statusCode).json({ status: 'error', errorCode: errorCode, data: { token: token, reason: reason }});
 }
 
 module.exports = { sendMessage, sendError };
diff --git a/backend/app/config/sessionJWT.config.js b/backend/app/config/sessionJWT.config.js
index 0a50b10..b5b76cb 100644
--- a/backend/app/config/sessionJWT.config.js
+++ b/backend/app/config/sessionJWT.config.js
@@ -12,10 +12,11 @@ const JWTRS256_PRIVATE_KEY = Buffer.from(process.env.JWTRS256_PRIVATE_KEY, 'base
 const JWTRS256_PUBLIC_KEY = Buffer.from(process.env.JWTRS256_PUBLIC_KEY, 'base64').toString('utf-8');
 
 
-function createSessionJWT (mail) {
+function createSessionJWT (login, role) {
   return sessionJWTConfig.sign(
     {
-      mail: mail,
+      login: login,
+      role: role,
       midExp: Math.floor(Date.now() / 1000) + 1800
     },
     JWTRS256_PRIVATE_KEY,
@@ -28,20 +29,21 @@ function createSessionJWT (mail) {
 
 function createSessionCookie(req, res, payload) {
   let jwtToken;
-  if ((typeof payload.mail !== 'undefined') &&
-    (typeof payload.midExp !== 'undefined') &&
+  if (typeof payload.login !== 'undefined' &&
+    typeof payload.role !== 'undefined' &&
+    typeof payload.midExp !== 'undefined' &&
     (Math.floor(Date.now() / 1000) <= payload.midExp)) {
     jwtToken = req.headers.cookie;
   }
   else {
-    jwtToken = createSessionJWT(payload.mail);
+    jwtToken = createSessionJWT(payload.login, payload.role);
   }
   res.cookie('SESSIONID', jwtToken, {httpOnly:true, secure:false});
 }
 
 function decodeSessionCookie(sessionid) {
   if (typeof sessionid === 'undefined') {
-    return {mail: -1};
+    return {login: -1, role: -1};
   }
   try {
     const token = sessionJWTConfig.verify(
@@ -51,7 +53,7 @@ function decodeSessionCookie(sessionid) {
     return {token: token};
   }
   catch (err) {
-    return {mail: -1};
+    return {login: -1, role: -1};
   }
 }
 
@@ -65,20 +67,28 @@ function setSessionCookie (req, res, session) {
 }
 module.exports.setSessionCookie = setSessionCookie;
 
-function getMail(session) {
+function getToken(session) {
   if (typeof session === 'undefined' || typeof session.token === 'undefined') return -1;
   return session.token;
 }
-module.exports.getMail = getMail;
+module.exports.getToken = getToken;
 
-function checkLogin(req, res){
+function checkLogin(req, res, role=null){
   if(typeof req.cookies !== 'undefined'){
     const session = getSession(req.cookies.SESSIONID);
-    const token = getMail(session);
-    if(token.mail === 'undefined' || token.mail === -1){
+    const token = getToken(session);
+    if(token.login === 'undefined' || token.login === -1){
       return sendError(res, 500, -1, "User not authenticated.");
     } else{
-      return token;
+      if(role === null){
+        return token;
+      } else{
+        if(token.role !== 'undefined' && token.role === role){
+          return token;
+        } else{
+          return sendError(res, 500, -1, "User doesn't have permission.", token);
+        }
+      }
     }
   } else {
     return sendError(res, 500, -1, "Cookies don't exist.");
diff --git a/backend/app/controllers/tutorial.controller.js b/backend/app/controllers/tutorial.controller.js
deleted file mode 100644
index 222aa0c..0000000
--- a/backend/app/controllers/tutorial.controller.js
+++ /dev/null
@@ -1,117 +0,0 @@
-const db = require("../models/mongodb.model");
-const {sendError, sendMessage} = require ("../config/response.config");
-const Tutorial = db.tutorials;
-
-// Create and Save a new Tutorial
-exports.create = (req, res) => {
-  // Validate request
-  if (!req.body.title) {
-    sendError(res, 400,-1,"Content can not be empty!" );
-  }
-
-  // Create a Tutorial
-  const tutorial = new Tutorial({
-    title: req.body.title,
-    description: req.body.description,
-    published: req.body.published ? req.body.published : false
-  });
-
-  // Save Tutorial in the database
-  tutorial
-    .save(tutorial)
-    .then(data => {
-      sendMessage(res, 1, data)
-    })
-    .catch(err => {
-      sendError(res, 500,-1,err.message || "Some error occurred while creating the Tutorial.");
-    });
-};
-
-// Retrieve all Tutorials from the database.
-exports.findAll = (req, res) => {
-  const title = req.query.title;
-  let condition = title ? { title: { $regex: new RegExp(title), $options: "i" } } : {};
-
-  Tutorial.find(condition)
-    .then(data => {
-      sendMessage(res, 1, data)
-    })
-    .catch(err => {
-      sendError(res,500,-1,err.message || "Some error occurred while retrieving tutorials.");
-    });
-};
-
-// Find a single Tutorial with an id
-exports.findOne = (req, res) => {
-  const id = req.params.id;
-
-  Tutorial.findById(id)
-    .then(data => {
-      if (!data)
-        sendError(res,404,-1,"Not found Tutorial with id " + id );
-      else sendMessage(res, 1, data);
-    })
-    .catch(err => {
-      sendError(res,500,-1,err.message || "Error retrieving Tutorial with id=" + id );
-    });
-};
-
-// Update a Tutorial by the id in the request
-exports.update = (req, res) => {
-  if (!req.body) {
-    sendError(res,400,-1,"Data to update can not be empty!");
-  }
-
-  const id = req.params.id;
-
-  Tutorial.findByIdAndUpdate(id, req.body, { useFindAndModify: false })
-    .then(data => {
-      if (!data) {
-        sendError(res,404,-1,`Cannot update Tutorial with id=${id}. Maybe Tutorial was not found!`);
-      } else sendMessage(res, 1, { message: "Tutorial was updated successfully." });
-    })
-    .catch(err => {
-      sendError(res,500,-1,err.message || "Error updating Tutorial with id=" + id);
-    });
-};
-
-// Delete a Tutorial with the specified id in the request
-exports.delete = (req, res) => {
-  const id = req.params.id;
-
-  Tutorial.findByIdAndRemove(id)
-    .then(data => {
-      if (!data) {
-        sendError(res,404,-1,`Cannot delete Tutorial with id=${id}. Maybe Tutorial was not found!`);
-      } else {
-        sendMessage(res, 1, { message: "Tutorial was deleted successfully!" });
-      }
-    })
-    .catch(err => {
-      sendError(res,500,-1,err.message || "Could not delete Tutorial with id=" + id);
-    });
-};
-
-// Delete all Tutorials from the database.
-exports.deleteAll = (req, res) => {
-  Tutorial.deleteMany({})
-    .then(data => {
-      sendMessage(res, 1, {
-        message: `${data.deletedCount} Tutorials were deleted successfully!`
-      });
-    })
-    .catch(err => {
-      sendError(res,500,-1,err.message || "Some error occurred while removing all tutorials.");
-    });
-};
-
-// Find all published Tutorials
-exports.findAllPublished = (req, res) => {
-  Tutorial.find({ published: true })
-    .then(data => {
-      sendMessage(res, 1, data);
-    })
-    .catch(err => {
-      sendError(res,500,-1,err.message || "Some error occurred while retrieving tutorials.");
-    });
-};
diff --git a/backend/app/controllers/user.controller.js b/backend/app/controllers/user.controller.js
index 9659cef..51a01d1 100644
--- a/backend/app/controllers/user.controller.js
+++ b/backend/app/controllers/user.controller.js
@@ -1,27 +1,26 @@
 const db = require("../models/mongodb.model");
 const {sendError, sendMessage} = require ("../config/response.config");
 const checkFormat = require("../config/checkFormat.config");
-const sessionJWT = require('../config/sessionJWT.config');
-const {checkLogin} = require("../config/sessionJWT.config");
+const {checkLogin, setSessionCookie} = require("../config/sessionJWT.config");
 const User = db.users;
 
 // Authenticate an User
 exports.auth = (req, res) => {
   checkFormat(req, res);
   // Validate request
-  if (!req.body.mail || !req.body.hashPass) {
-    sendError(res, 400,-1,"Content can not be empty ! (mail and hashPass needed)");
+  if (!req.body.login || !req.body.hashPass) {
+    sendError(res, 400,-1,"Content can not be empty ! (login and hashPass needed)");
   } else{
     // Check User in the database
     User
-      .findOne({mail: req.body.mail, hashPass: req.body.hashPass}, [{count: {$size: "$_id"}}])
+      .findOne({login: req.body.login, hashPass: req.body.hashPass}, {role: true})
       .then(data => {
         if (data !== null){
-          sessionJWT.setSessionCookie(req, res, { mail: req.body.mail });
+          setSessionCookie(req, res, { login: req.body.login, role: data.role});
           return sendMessage(res, 1, true);
         } else {
-          sessionJWT.setSessionCookie(req, res, { mail: -1 });
-          return sendError(res, 500, -1, "Invalid mail or password.");
+          setSessionCookie(req, res, { login: -1, role: -1 });
+          return sendError(res, 500, -1, "Invalid login or password.");
         }
       })
       .catch(err => {
@@ -35,17 +34,17 @@ exports.disconnect = (req, res) => {
   let token;
   if(checkFormat(req, res) && (token = checkLogin(req, res))) {
     console.log(token);
-    sessionJWT.setSessionCookie(req, res, {mail: -1});
-    return sendMessage(res, 1, {message: "User disconnected"});
+    setSessionCookie(req, res, {login: -1});
+    return sendMessage(res, 1, {message: "User disconnected"}, token);
   }
 };
 
 // Create and Save a new User
 exports.create = (req, res) => {
-    checkFormat(req, res);
+  checkFormat(req, res);
   // Validate request
-  if (!req.body.login || !req.body.hashPass || !req.body.mail || !req.body.role) {
-    sendError(res, 400,-1,"Content can not be empty ! (login, hashPass,  mail and role needed");
+  if (!req.body.login || !req.body.hashPass || !req.body.mail) {
+    sendError(res, 400,-1,"Content can not be empty ! (login, hashPass and mail needed");
   }
   else{
     User.exists({login: req.body.login}, function (err, docs){
@@ -81,17 +80,17 @@ exports.create = (req, res) => {
 // Retrieve all Users from the database.
 exports.findAll = (req, res) => {
   let token;
-  if(checkFormat(req, res) && (token = checkLogin(req, res))){
+  if(checkFormat(req, res) && (token = checkLogin(req, res, 10))){
     console.log(token);
     const login = req.query.login;
     let condition = login ? { login: { $regex: new RegExp(login), $options: "i" } } : {};
 
     User.find(condition, {hashPass: false})
       .then(data => {
-        sendMessage(res, 1, data)
+        sendMessage(res, 1, data, token)
       })
       .catch(err => {
-        sendError(res,500,-1,err.message || "Some error occurred while retrieving users.");
+        sendError(res,500,-1,err.message || "Some error occurred while retrieving users.", token);
       });
   }
 };
diff --git a/backend/app/models/mongodb.model.js b/backend/app/models/mongodb.model.js
index 974b911..58cce74 100644
--- a/backend/app/models/mongodb.model.js
+++ b/backend/app/models/mongodb.model.js
@@ -6,7 +6,6 @@ mongoose.Promise = global.Promise;
 const db = {};
 db.mongoose = mongoose;
 db.url = dbConfig.url;
-db.tutorials = require("./tutorial.model")(mongoose);
 db.users = require("./user.model")(mongoose);
 
 module.exports = db;
diff --git a/backend/app/models/tutorial.model.js b/backend/app/models/tutorial.model.js
deleted file mode 100644
index e5809f8..0000000
--- a/backend/app/models/tutorial.model.js
+++ /dev/null
@@ -1,17 +0,0 @@
-module.exports = mongoose => {
-  let schema = mongoose.Schema({
-      title: String,
-      description: String,
-      published: Boolean
-    },
-    { timestamps: true }
-  );
-
-  schema.method("toJSON", function() {
-    const { __v, _id, ...object } = this.toObject();
-    object.id = _id;
-    return object;
-  });
-
-  return mongoose.model("tutorial", schema);
-};
diff --git a/backend/app/models/user.model.js b/backend/app/models/user.model.js
index fe29d74..c9b97b5 100644
--- a/backend/app/models/user.model.js
+++ b/backend/app/models/user.model.js
@@ -3,7 +3,10 @@ module.exports = mongoose => {
       login: String,
       hashPass: String,     // WARNING: We don't want to send back the hashPass
       mail: String,
-      role: Object
+      role: {
+        type: Number,
+        default: 0
+      }
     },
     { timestamps: true }
   );
diff --git a/backend/app/routes/tutorial.routes.js b/backend/app/routes/tutorial.routes.js
deleted file mode 100644
index 5ee5f97..0000000
--- a/backend/app/routes/tutorial.routes.js
+++ /dev/null
@@ -1,28 +0,0 @@
-module.exports = app => {
-  const tutorials = require("../controllers/tutorial.controller.js");
-
-  let router = require("express").Router();
-
-  // Create a new Tutorial
-  router.post("/", tutorials.create);
-
-  // Retrieve all Tutorials
-  router.get("/", tutorials.findAll);
-
-  // Retrieve all published Tutorials
-  router.get("/published", tutorials.findAllPublished);
-
-  // Retrieve a single Tutorial with id
-  router.get("/:id", tutorials.findOne);
-
-  // Update a Tutorial with id
-  router.put("/:id", tutorials.update);
-
-  // Delete a Tutorial with id
-  router.delete("/:id", tutorials.delete);
-
-  // Create a new Tutorial
-  router.delete("/", tutorials.deleteAll);
-
-  app.use('/api/tutorials', router);
-};
diff --git a/backend/server.js b/backend/server.js
index 9e913c0..f349ba7 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -27,7 +27,6 @@ db.mongoose
   });
 
 require("./app/config/sessionJWT.config");
-require("./app/routes/tutorial.routes")(app);
 require("./app/routes/user.routes")(app);
 
 app.listen(port, '0.0.0.0',() => {