FORT CARSON, Colo. — For quick access to information, QR codes are used by private companies as well as federal, state and local governments.

Whether you need to scan a QR code, or you want to create a QR code of your own (for a wifi network, a contact card, or anything else), you’ve got a variety of options to pick from.

If you'd like to add a QR code to your Web site or print one on another product (such as a business card or promotional T-shirt), there are free QR generator sites that will allow you to do this.

How to make a QR code Plenty of apps for computers and mobile devices will happily create a QR code for you. There are no major differences between most, so it doesn’t matter too much which one ...