By Scott Aurnou
QR (short for ‘quick response’) codes are often relatively small boxes that look somewhat like scrambled checkerboards and can be scanned to connect to websites, pictures, files and other content hosted online. While many of them have a black and white boxed-shaped design similar to the image accompanying this article, they can also come in different shapes and colors. In addition to purpose-built scanners designed to read the codes – like one you might see at an airport security checkpoint – many mobile devices can read them if you download a scanning app.
In addition to practical applications like the aforementioned airport security checkpoint or tracking manufactured goods in a factory or warehouse setting, QR codes are often used as marketing tools offering up promotional information or discounts (i.e., ‘Scan here to get 10% off your next order,’ etc.). There are a number of uses for them, but they can also present a significant security risk. In effect, the codes are direct links to online content and they can introduce malware onto your mobile device just like an infected link in an Internet search, an email or text message can. Does that mean you shouldn’t use them? No, but – like dealing with anything else on the Web – don’t forget your common sense at the door.
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