Scanning the BtwinBooks QR included in the physical book, the reader will have it available in the Library and will be able to read the digital copy of the book. A physical book ownership check will be required everytime the QR is scanned in a different device, to access reading. After the check is positive, the reader will be able to read the digital book anywhere, navigating to a specified page of the physical book so facilitate reading experience in the physical and digital world. Bookmarks and notes can be added to the digital book.