Sometime developer puts Drupal website into maintenance mode in order to deploy code and database upgrades safely. However, that is not possible for user who has not the right permission to access to the website. Sometime you would like to give access to your friend or client or beta tester to get access to your website. That is what this module does. Visitor Righ module generate an URL by which the an client can access to the project without login and according to the parameters you will set. You can choose what role to give and the duration of the access.