public function isBlocked()
    {
        // Get this user IP Address.
        //
        $ip_address = $this->CI->input->ip_address();

        // Time that a user gets blocked.
        //
        $blockTime = 1800;

        // Check if we have the user record.
        //
        $record = $this->CI->db->where('ip_address', $ip_address)->get('login_attempts')->row();
        if ( ! empty( $record ) ):
            // Check this user login attempts.
            //
            if ( $record->attempts >= 3 ):
                // Check if the user block has expired.
                //
                if( ( time() - $record->lastLogin ) > $blckTime ):
                    // User is not blocked anymore.
                    //
                    return false;
                else:
                    // The user is blocked.
                    //
                    return true;
                endif;
            endif;
        endif;

        // The user is not blocked.
        //
        return false;
    }


    private function loginAttempt( $passed = false )
    {
        // Get this user IP Address.
        //
        $ip_address = $this->CI->input->ip_address();

        // If the user logged in with success.
        //
        if ( $passed ):
            // Clear this user loginAttempts.
            //
            $this->CI->db->where('ip_address', $ip_address)->update('login_attempts', array( 'attempts' => 0, 'lastLogin' => time() ) );

        // This is a failed login attempt.
        //
        else:
            // Check if we have the user record.
            //
            $record = $this->CI->db->where('ip_address', $ip_address)->get('login_attempts')->row();
            if ( empty( $record ) ):
                // Create the user record.
                //
                $this->CI->db->insert('login_attempts', array( 'ip_address' => $ip_address, 'attempts' => 1, 'lastLogin' => time() ) );

            // We do, check if the user needs to be blocked.
            //
            else:
                // The user exceeded the login attempts.
                //
                if ( $record->attempts < 3 ):
                    // Update the user record.
                    //
                    $this->CI->db->where('ip_address', $ip_address)->update('login_attempts', array( 'attempts' => ( $record->attempts + 1), 'lastLogin' => time() ) );
                endif;
            endif;
        endif;

        // We are done here.
        //
        return true;
    }