Everything You Wanted to Know but Were Afraid to Ask About QR Codes

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Have you ever used qr codes?

quick response-быстрый отклик
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widespread-широко распространен
binary format-двоичный формат
QR codes around the world
sequence of data-последовательность данных
data carrier-носитель данных
payment system-платежная система
risk of fraud-угроза мошенничества
mandatory standard-обязательный стандарт
excludes errors in manual data entry-исключает ошибки при ручном вводе данных

What is a QR code?
quick response-
быстрый отклик
The first QR code appeared in the 90th in Japan and it was developed in Toyota.
In the 2000s QR became an experimental way of payment, but at the beginning the operation took too much time -20 seconds.

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do you know any other application of the code?
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Brazil
a new mandatory standard of payments by QR codes

The process of payment by QR code
Why Brazil has performed a new mandatory standard of payments by QR codes?
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Online generators of QR Codes
qr-code-generator.com
the-qrcode-generator.com
qrcode-monkey.com
me
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If you look at the center for 30 seconds then close your right eye the picture will move?
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do you think this measure is effective?
Qr codes used in clubs and bars