How can I put information in the QR code?

A. 1

It works on a similar principle to a bar code.
I just inked the bar code.
It is divided into white and black, marked with 0 and 1, and you can save the content with these binary codes.
If you look at the YouTube video below, it's explained well

Gentleman 9 years ago 0

OK

A. 2

It was created in 1994 by Denso Wave, a subsidiary of Toyota Motor Corporation in Japan.
The QR code began to spread rapidly because Denso Wave refused to claim the QR code patent.
And with the advent of the smartphone era, QR codes became very widely used.
The data that can be put is enough to contain 7,089 numbers, 4,296 alphabetic characters, and 2,953 binaries, but what is mainly used on smartphones is the URL of the app or site address.

Gentleman 9 years ago 0

OK

A. 3

If you want to know more information about the QR code, you can go to the address below, which is the official website of the QR code.
Denso Wave, which made the QR code, is a Japanese company, but the homepage below provides Korean language support.

http://www.qrcode.com/ko/index.html

Gentleman 9 years ago 0

OK