User account ~ Every registered user is automatically assigned with his/her user account in the library catalog through which you can take full controll over your checked-out and reserved books. After signing in you can prolong your checked-out books, or reserve books that are currently not available for check out. If you only need to search the library catalog, you can sign in as „Guest“. ACCESS TO THE LIBRARY CATALOG ACCESS TO THE LIBRARY CATALOG advanced search Library account Sign in using your university username (the same as for Usermap/KOS), and PIN code that you have chosen during your registration at the CTU library. Do you want to know how to ... register at the CTU library? prolong/renew your books? reserve a book?