As phones, planners, cameras and miniature computers, cell phones provide many convenient functions for businesses. One of the newest features allows you to look up information based on barcodes.

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 ...

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