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# Security Questions
Gatekeeper includes the concept of security questions to act as a secondary mechanism for authenticating the user. Instead of trying to provide a set of questions with the installation, the tool only provides the functionality to create and verify
the answers.
The answers for the questions are stored as `bcrypt` strings instead of in plain-text to prevent simple exposure if the database is compromised. It currently uses the [password hashing](http://php.net/manual/en/ref.password.php) handling in PHP for hash creation and verification. It evaluates the hashes directly and, as such, the answer is *case sensitive* and must match the answer exactly.
Additionally, Gatekeeper also prevents the user from providing an answer that's the same as their current password.
## Adding a question
To add a security question for a user, you'll need to first find the user then call the `addSecurityQuestion` method on that user object:
```php
<?php
$user = Gatekeeper::findUserById(1);
$result = $user->addSecurityQuestion(array(
'question' => 'What...is your favorite color?',
'answer' => 'Blue...no, yellow!'
));
if ($result === true) {
echo 'Question added successfully';
}
?>
```
## Getting a user's questions and answers
You can get the list of questions for a user by using the `securityQuestions` property:
```php
<?php
$user = Gatekeeper::findUserById(1);
// Returns a collection object of the user's questions
$questions = $user->securityQuestions;
?>
```
## Validating the answer given
You can use the `verifyAnswer` method on the `SecurityQuestionModel` object to verify the answer to the given question. For example, we can pull the questions and check to be sure the answer to the first one is correct:
```php
<?php
$questions = Gatekeeper::findUserById(1)->securityQuestions;
$answer = "this is my answer that's correct";
if ($questions[0]->verifyAnswer($answer) === true) {
echo 'The answer was correct!';
}
?>
```
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