A special pass will be needed to circulate in some areas of Paris during the Olympics this summer. As online applications for the necessary QR code opened Monday, we look at who needs them, when, and ...

What is a QR Code? A quick-response code (QR code) is a type of barcode that contains data for a locator, an identifier, and web tracking. QR codes have been around for a long time. They were first ...

Olympic security zones are now in operation in Paris but complicated rules about QR codes have left a lot of people confused. Here we answer the most common questions about the rules and the security ...

Add Yahoo as a preferred source to see more of our stories on Google. QR codes are visual patterns that store data smartphones can read. AP Photo/Vincent Yu Among the many changes brought about by the ...