QR codes are quite common today: on goods, tickets, clothes, business cards, on the Internet network qr code for business reviews, etc. Their use has become commonplace. Users do not think about such questions as how to get a qr code, how to generate a qr code, what and how to scan a qr.
It can be said with certainty that the coar acts as an optical type label, which contains the information volume of certain data.
Symbols, numbers and letters can be used for this.
qr codes have a wide range of uses. For example:
with their help, you can transfer a video picture, text, mobile message, music, data from social networks;
they may contain an email address and coordinates of recipients for sending a letter;
their use helps to determine the geolocation and location of the object;
the presence of a cuar opens access to a Wi-Fi network;
Using the qr code, you can save entries in the event calendar and important calendar dates-reminders of various events and activities.
According to the survey, 97% of respondents met qr codes in everyday life, and 62% of respondents used them in transport, when presenting tickets, to follow a link to a website, etc.
It is safe to say that qr codes are one of the most reliable ways to store information, as well as its fast transmission.