private void LoginForm_Shown(object sender, EventArgs e) { AuthResponse response = new AuthResponse(); if (response.AuthenticateProgram("08lsJevTBmPa=ME2uzO1bpf6B")) //Chnage to match the Auth token you generate to use without error. { if (response.FreeModeActive) //This is only if you wish to have free mode implemented in your application { response.ExecuteFreeMode(new MainForm(), this); } } else { MessageBox.Show("Mismatch in program authentication tokens has been noticed. Program will now close for security purposes."); Application.Exit(); } }