QR codes are like tiny treasure maps made of squares. When you scan them, your phone reads the pattern and turns it into a message or website link. Imagine if each square was a letter in a secret code, and your phone could read all of them at once to find out what they say.
Examples
- QR codes on restaurant menus let you scan them for more info about each dish.
- A QR code on a billboard can take you directly to a website with just one scan.
- You can even use a QR code to send messages or links to friends quickly through your phone.
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See also
- How Do Computers Remember Everything?
- How Does a QR Code Work?
- Why Do QR Codes Work on Both Sides?
- Why Do QR Codes Work Even When Broken?
- How Can a Single Atom Light Up an Entire Room?