How to scan a QR code with WeChat, and then the mobile phone automatically sends messages to all WeChat contacts?

1, so it is better to turn it off to prevent this from happening.

2. This is to use the third-party software to set the content to be sent and generate the QR code. As long as customers scan it, they can automatically send messages to all their address book friends and WeChat groups.

Knowledge expansion:

1. First, connect to the network, both data network and wireless network, and log on to WeChat.

2. The login interface is shown below, with a "+"in the upper right corner.

3. Click "+"and a drop-down menu will appear. Select "Scan".

4. Then the interface of scanning QR code will appear. Put the QR code in the box and you can scan it automatically.

5, enter the micro signal, "discover"-"sweep".

6. Click "Sweep" to enter the interface of scanning QR code, and put the QR code into the box for automatic scanning.

Two-dimensional bar code is a kind of black and white figure distributed on a plane (two-dimensional direction) according to certain rules, which is used to record data symbol information. In coding, the concepts of "0" and "1" bit streams, which constitute the internal logic foundation of the computer, are skillfully used, and several geometric figures corresponding to binary are used to represent the numerical information of characters, which can be automatically read by image input equipment or photoelectric scanning equipment to realize the automatic processing of information: it has some characteristics of barcode technology: each code system has its own specific character set; Each character occupies a certain width; It has certain verification function. At the same time, it also has the function of automatically identifying different line information and processing graphics rotation change points.