Login Action Method in Home Controller

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using TwoFactorAuthenticationDemo.Models;
using Google.Authenticator;

namespace TwoFactorAuthenticationDemo.Controllers
{
    public class HomeController : Controller
    {
        private const string key = "qazqaz12345"; //You can add your own Key
        public ActionResult Login()
        {
            return View();
        }
    }
}