Zhiyi live code is aimed at the problem that the QR code of WeChat group expires, or more than 200 people cannot scan the code. Only 1 live code is needed to generate a permanent and effective QR code.

For educators such as teachers and students, a lot of visual materials are used every semester. Especially in universities, many notices are in a teaching group. Many teachers and students in different disciplines will only get along for one semester, so it is too much trouble for teachers to rebuild groups and redistribute materials when changing classes.

Use a permanent QR code to sort out these materials, just send a QR code to students to extract courseware and materials themselves. The same is true for students. If they prepare for the postgraduate entrance examination three years later, it will be very troublesome to sort out the information, so it will always be effective to put it in a QR code.

Whether it is qq or WeChat, there will be a time limit for uploading files to the group, and generating a permanent QR code will not be invalid and will not take up space. After all, it's just a QR code picture.

For example, the company's internal policy update or internal knowledge sharing. The dynamic QR code is used to store this information, which can be updated at any time in the background. Company insiders can scan this QR code at any time to see the latest content. You don't need to print it out specially, which will save a lot of time and paper.