You can log in to your account with your library card's number (found below the barcode) and the 4 digit PIN code. If you do not have the 4 digit PIN code, you can get it by visiting any Louna library.
When you log in using your library card, the service will store the library card number and PIN code as well as your name, email address and home library.
When you log in using your email address, the service will store your name, email address and home library.
Read more about management of personal information on the Data protection page.