QR Codes

A QR code is a special square pattern of black and white dots. You can scan it with a phone camera to get information. QR codes can open websites, show menus, or share contact details. They are used everywhere today.

How QR Codes Work

QR stands for Quick Response. The pattern of dots stores information. When your phone's camera sees the code, it reads the pattern. The phone then shows you a website or message. Each QR code has a unique pattern for different information.

Where You See QR Codes

Restaurants use QR codes to show their menus on your phone. Stores put QR codes on products for more information. Museums use them to tell you about exhibits. Some homework assignments include QR codes that link to videos. You might even see them on posters and signs.

Fun Facts

• QR codes were invented in Japan in 1994 to track car parts in a factory.
• A QR code can store over 4,000 characters of text.
• QR codes still work even if part of the pattern is damaged or covered.

Did You Know?

QR codes became much more popular during the COVID-19 pandemic. Restaurants started using them instead of paper menus so people did not have to touch shared objects!