Barcodes are like secret messages on products. They help the computer at the store know exactly what you're buying and how much it costs. Imagine each product has a special number that only the machines can read, that's a barcode! It looks like lines, but it's actually telling the store something very important.
Examples
- Your mom scans the barcode at the grocery store to pay for your favorite snack.
- A barcode on a candy bar helps the store know how much it costs.
- The scanner reads the lines of the barcode like a secret code.
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See also
- Why Do We Get 'The Runs' on Planes?
- How Does a Fridge Keep Food Cool?
- How Does a Smartphone Recognize Your Face?
- How Did the Internet Begin?
- Why Do We Use Passwords for Security?
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Categories: Technology · barcode,technology,shopping