Will the QR code used up?

Nowadays, payment code, business card code, campus code, bus code, and other two-dimensional codes have penetrated every corner of our lives, which not only brings convenience to people's lives but also drives national economic development.
According to relevant statistics, at present, more than 10 billion two-dimensional codes are consumed every day in the world. If calculated in this way, more than 400 billion two-dimensional codes are consumed every year, and the number is amazing.
Many people are very curious about this. Will the world's QR code be used up? What if it's really used up?
The predecessor of two-dimensional code -- one-dimensional code.
One dimensional code is the bar code that we usually see. As the predecessor of two-dimensional code, although bar code is not used so frequently now, bar code is also widely used in some aspects.
Now let's take a look at the bar code. On the surface, the bar code is composed of a series of black stripes and blanks of different thicknesses. However, in fact, some item information is hidden in it. The specific principle is as follows:
The bar code uses the reflectivity between black and white stripes. When the light of the scanner shines on the bar code, the black area absorbs the light and the white area reflects the light. In this way, the scanner can analyze the information on the bar code through the reflected light.
But the bar code is one-dimensional, contains only some relatively simple information, simply speaking, it can only store information in the width direction, but there is no information in the length direction, so the information stored in the bar code is very limited.
If there is a lot of item information, the use of a bar code will be inconvenient. Moreover, the bar code is still very limited. It can only encode simple information such as letters, numbers, and symbols. Complex information such as Chinese characters cannot be encoded.
The upgrade of bar code -- two-dimensional code
In 1994, Japanese scientist Hara Changhong added another dimension to the bar code and invented the two-dimensional code. Compared with the bar code generation of two-dimensional code, two-dimensional code can record information in both directions and has a powerful information storage function.
Also, a two-dimensional code can encode complex information such as Chinese characters. Therefore, two-dimensional code has a very wide range of applications after its invention.
Nowadays, we use two-dimensional codes every day, such as sweep code payment, official accounts, and so on.
The principle of two-dimensional code
Two-dimensional code seems to be a geometric pattern with black and white graphics distributed in a certain rule, but in fact, two-dimensional code is a binary code composed of 0 and 1, in which white means "0", black means "1", and information is encoded in binary form and distributed in two dimensions according to a certain rule, and then the two-dimensional code scanner will read it according to the corresponding rules Get the information, so you can get the information contained in it.
Also, the number of changes in the two-dimensional code is very terrible, because the data is constantly changing, thus forming countless different codes.
Theoretically speaking, the number of QR codes is limited, but it is far away from the day when they are used up.
At present, the two-dimensional code we use is mainly 21 × 21, that is, 441 points. If we calculate according to the binary system of 0 and 1, the number of changes can reach 2 ^ 441 (5.6 × 10 ^ 132 two-dimensional codes). Just look at the 21 × 21 sizes, the number of two-dimensional codes is astronomical.
However, at present, the largest two-dimensional code format is V40, which is 177 × 177 in size. After a simple calculation, 2 ^ (177 × 177) two-dimensional codes can be formed, which is almost 10 to the power of 10000. This is only the number of two-dimensional code combinations in V40 format, and the number from V1 to v39 is even more amazing.
Even if the world consumes 10 billion two-dimensional codes every day and 3.65 trillion two-dimensional codes every year, it will be endless
Theoretically speaking, if human beings exist for a long time, the QR code may be used up one day, but it is a little groundless.
In the future, with the progress of science and technology, it may not be long before the two-dimensional code will be eliminated, and there will be more advanced three-dimensional code, four-dimensional code, and so on. Therefore, now we don't have to worry about whether the two-dimensional code will be used up.