public function initAuth()
    {
        if ($this->_verified)
            return true;

        $output = $this->postRequest(
            'identification/bankid/mobile',
            [
                'useEasyLogin'        => false,
                'generateEasyLoginId' => false,
                'userId'              => $this->_username,
            ]);

        if ($output->status != 'USER_SIGN')
            throw new Exception('Unable to use Mobile BankID. Check if the user have enabled Mobile BankID.', 10);

        $this->saveSession();

        return true;
    }