The easiest way to be admitted to the page to become a subscriber. Once you have sent the user a friend request, regardless of his reaction you will be entered in the list of Followers, access rights of which are different from casual visitors. In most cases, the subscriber has access to most of the content. Obviously, with the approval of the application and set the status to "Friend" you get even more options.
If the user has added you to the black list, just leave from the social network (you can do this by clicking the gear icon in the upper right corner and selecting log out). Since then, you can view pages of users that are not passing the authorization: the left will display a field for entering a username and password, right – personal data. However, the user has the right to block the way of viewing. In this case, the only possible way will be a viewing from someone else's page.
Please visit This is the official project of Pavel Durov, he doesn't use private user data. To log on to the website using the same username and password to log on to the VK, however, when you view other people's pages you get the benefits of: full view the history of statuses and openness of photos with the user to partially open pages. If the user has set the maximum level of protection, you can see his avatar in large size, date of birth and marital status.
Use direct links to access individual parts of the profile. Thus, the user can prohibit viewing of the pages, but not to block access to the "photo Albums". Then, if you manage to find the direct url of the page with photos, you can enter it in the address bar and browse all page. Similarly is the case with videos and notes.