Is it true that the bookstore scans the code to find a part-time job?

It is not true that the bookstore scans the code to find a part-time job. Mobile phone code scanning is not reliable, because I don't know if these two-dimensional codes have viruses, so there are great security risks. Therefore, do a part-time job with a mobile phone, don't just think about making money, you must think about the consequences, consider the risks and avoid being cheated.