diff --git a/src/controllers/AccountController.ts b/src/controllers/AccountController.ts
new file mode 100644
index 0000000..e4affd2
--- /dev/null
+++ b/src/controllers/AccountController.ts
@@ -0,0 +1,21 @@
+import { RequestHandler } from "../entities/RequestHandler";
+
+/**
+ * Account controller
+ * 
+ * @author Pierre HUBERT
+ */
+
+export class AccountController {
+
+	/**
+	 * Attempt to login user
+	 * 
+	 * @param handler 
+	 */
+	public static LoginUser(handler: RequestHandler) {
+
+		handler.success("Successful operation.");
+	}
+
+}
\ No newline at end of file
diff --git a/src/controllers/Routes.ts b/src/controllers/Routes.ts
index 5af7d17..c5acadb 100644
--- a/src/controllers/Routes.ts
+++ b/src/controllers/Routes.ts
@@ -1,5 +1,6 @@
 import { WelcomeController } from "./WelcomeController";
-import { RequestHandler } from "../models/RequestHandler";
+import { RequestHandler } from "../entities/RequestHandler";
+import { AccountController } from "./AccountController";
 
 /**
  * Controllers routes
@@ -16,13 +17,14 @@ export interface Route {
 	type ?: RouteType,
 	path: string,
 	cb: (req : RequestHandler) => void,
-	
 }
 
 export const Routes : Route[] = [
 
 	// Welcome controller
-	{type: RouteType.GET, path: "/", cb: WelcomeController.HomeMessage}
-
+	{type: RouteType.GET, path: "/", cb: WelcomeController.HomeMessage},
 
+	// Account controller
+	{path: "/account/login", cb: AccountController.LoginUser},
+	{path: "/user/connectUSER", cb: AccountController.LoginUser}, // Legacy
 ]
\ No newline at end of file
diff --git a/src/controllers/WelcomeController.ts b/src/controllers/WelcomeController.ts
index 9a40c91..a1619e0 100644
--- a/src/controllers/WelcomeController.ts
+++ b/src/controllers/WelcomeController.ts
@@ -1,4 +1,4 @@
-import { RequestHandler } from "../models/RequestHandler";
+import { RequestHandler } from "../entities/RequestHandler";
 
 /**
  * Welcome controller
diff --git a/src/entities/RequestHandler.ts b/src/entities/RequestHandler.ts
new file mode 100644
index 0000000..f74b592
--- /dev/null
+++ b/src/entities/RequestHandler.ts
@@ -0,0 +1,94 @@
+import { Response, Request } from "express";
+
+/**
+ * Response to a request
+ * 
+ * @author Pierre HUBERT
+ */
+
+export class RequestHandler {
+	public constructor(private req : Request, private response : Response) {}
+
+	/**
+	 * Get a parameter included in the post request
+	 * 
+	 * @param name Name of the parameter to get
+	 */
+	private getPostParam(name : string) : any {
+		return this.req.body[name];
+	}
+
+	/**
+	 * Get a String from the request
+	 * 
+	 * @param name The name of the string to get
+	 * @param minLength Minimal required size of the string
+	 * @param required If set to true (true by default), an error will
+	 * be thrown if the string is not included in the request
+	 */
+	public getString(name : string, minLength : number = 1, required : boolean = true) : string {
+		const param = this.getPostParam(name);
+
+		// Check if parameter was not found
+		if(param == undefined) {
+			if(required)
+				this.error(400, "Could not find required string: '"+name+"'");
+			return "";
+		}
+
+		if(param.length < minLength)
+			this.error(400, "Parameter "+name+" is too short!");
+
+		return "";
+	}
+
+
+	/**
+	 * Validate API tokens
+	 * 
+	 * @throws If the tokens could not be validated
+	 */
+	public async checkAPITokens() {
+
+		// Extract API name & token from request
+		const apiName = this.getString("serviceName");
+		const apiToken = this.getString("serviceToken");
+		
+		// Validate the token
+	}
+
+	/**
+	 * Output an error code
+	 * 
+	 * @param code HTTP Status code
+	 * @param message The message to send
+	 */
+	public error(code : number, message : string) {
+		this.response.status(code).send({
+			code: code,
+			message: message
+		});
+
+		throw Error("Could not complete request!");
+	}
+
+	/**
+	 * Return a successful operation
+	 * 
+	 * @param message Message associated to success
+	 */
+	public success(message: string) {
+		this.response.send({
+			success: message
+		});
+	}
+
+	/**
+	 * Send some data to the server
+	 * 
+	 * @param data The data to send back to the server
+	 */
+	public send(data: any) {
+		this.response.send(data);
+	}
+}
\ No newline at end of file
diff --git a/src/helpers/APIHelper.ts b/src/helpers/APIHelper.ts
new file mode 100644
index 0000000..9e1568b
--- /dev/null
+++ b/src/helpers/APIHelper.ts
@@ -0,0 +1,9 @@
+/**
+ * API Helper
+ * 
+ * @author Pierre HUBERT
+ */
+
+export class APIHelper {
+	
+}
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index 4489e24..15e0b29 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -2,7 +2,7 @@ import * as express from 'express';
 import { ConfigurationHelper, conf } from "./helpers/ConfigHelper";
 import { DatabaseHelper } from "./helpers/DatabaseHelper";
 import { Routes, RouteType } from './controllers/Routes';
-import { RequestHandler } from './models/RequestHandler';
+import { RequestHandler } from './entities/RequestHandler';
 
 /**
  * Main project script
@@ -23,11 +23,20 @@ async function init() {
 	// Start HTTP Server
 	const app = express();
 
+	app.use(express.urlencoded());
+
 	// Process the list of routes
 	Routes.forEach(route => {
 		
-		const cb = (req : express.Request, res : express.Response)=> {
-			route.cb(new RequestHandler(req, res));
+		// Callback is common to all requests type
+		const cb = async (req : express.Request, res : express.Response)=> {
+			const handler = new RequestHandler(req, res);
+
+			// Check API tokens
+			await handler.checkAPITokens();
+
+
+			route.cb(handler);
 		};
 
 		if(route.type == RouteType.GET)
diff --git a/src/models/RequestHandler.ts b/src/models/RequestHandler.ts
deleted file mode 100644
index f48fe5c..0000000
--- a/src/models/RequestHandler.ts
+++ /dev/null
@@ -1,33 +0,0 @@
-import { Response, Request } from "express";
-
-/**
- * Response to a request
- * 
- * @author Pierre HUBERT
- */
-
-export class RequestHandler {
-	public constructor(private req : Request, private response : Response) {}
-
-	/**
-	 * Output an error code
-	 * 
-	 * @param code HTTP Status code
-	 * @param message The message to send
-	 */
-	public error(code : number, message : string) {
-		this.response.status(code).send({
-			code: code,
-			message: message
-		})
-	}
-
-	/**
-	 * Send some data to the server
-	 * 
-	 * @param data The data to send back to the server
-	 */
-	public send(data: any) {
-		this.response.send(data);
-	}
-}
\ No newline at end of file