Matrix mania.

• Position: STATELINE - Brief article

Although a dozen or so states use bar codes on bills, Wisconsin will soon be using the latest graphic--matrix codes--on bills, amendments and resolutions. These graphics, which contain hyperlinks, can connect users to loads of information through the cameras on their smart phones. Scanning software (often free) on the phone determines the nature of the information. For example, if the code contains a phone number, the phone will...