Look at your snack bag.
Do you see a small square?
It may be a QR code.
A QR code is a picture for phones.
Open your phone camera.
Then point it at the code.
A web page may open.
It can show food facts or allergy information.
An allergy means some food can make you sick.
The page may also explain recycling.
Some codes offer videos or special deals. (gs1.dk)
For example, you buy a bag of cookies.
You scan its code after school.
A fun video opens on your phone.
The small bag becomes a big door.
What will you find behind it?