Upon selecting the ’Public Books’ option the app’s home screen, users are presented with a list of predefined categories (Figure 57). Choosing a desired category prompts the application to display an organized collection of books within that category (Figure 58). For each book, the application provides key information, including the title, description, author, and language. Additionally, users have the option to click on the QR icon associated with each book, which conveniently opens a new window displaying the book’s QR code for easy access and interaction.