You can scan a QR code using the camera on your smartphone, tablet, or computer — however, you may need to download an app.

As smartphones have become more and more ubiquitous, so have QR codes. These maze-looking squares are a type of matrix bar code that contains data — usually, QR codes point to a website or open a ...

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If I have to pull out my mobile device to read QR codes, I want an app that’s fast, locks on, and scans codes quickly without any fuss. While there’s a plethora of QR code scanners on the App Store, ...