Most of the QR codes of books are displayed, which is difficult to understand. In the era when almost everyone has a smart phone, scanning code has become a "prescribed action" for most people every day, and many things need to be done by scanning code. And it's the book's turn, even if it's scanning the QR code attached to each chapter by books or videos, should it be normal? Unfortunately, scanning the QR code is just "stuck" in the book.

The QR code of books is mostly displayed. The main reason given is that in books with QR codes, the vast majority of QR codes are only used as simple advertising channels-scanning QR codes can pay attention to WeChat official accounts, publishers, or WeChat official accounts and authors, and only play a guiding role. One of the few QR codes that can directly provide substantive content focuses on practical topics such as food, education and tourism, and obviously has the intention of shopping guide. Moreover, if you can listen to video or audio in the QR code, the publisher needs to ask the operator to carry out technical maintenance and pay. In this regard, whether the publishing house replaces resources or buys technical services, it will raise the cost of books.