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Using QR Codes Safely: Fake Codes and Cautions for Creators

Published: Oct 19, 2026 | Updated: Oct 19, 2026 | About (Japanese)

Key points
  • Check the URL shown after scanning
  • Beware of QR stickers pasted over real ones
  • When making one, check where it leads

QR codes are handy, but you cannot see what is inside, so take care.

For people who scan

For people who make them

About this tool

Create a QR Code processes what you type only inside the browser on your device. There is no sign-up and nothing is sent when you make one. See the Privacy Policy for details.

When a password is involved

A Wi-Fi QR code contains the password as it is. If you post it where others can see it, protect yourself, for example by using a guest Wi-Fi.

Use "Create a QR Code (URL, Wi-Fi)" (free)

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