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, ...

Do the barcodes or QR codes on ... greetings as QR codes—but they commonly just contain a website address, sometimes with a tracking code. You can get a free barcode reader app on your ...