Maybe you’ve been nervously carrying your COVID-19 vaccine card for months, worried you'll lose it. Maybe you’ve already misplaced it and had to request a new one. Worries and hassle, be gone: you can ...

QR code, short for Quick Response Code, is a kind of matrix barcode that includes information about a product or service. You can find it being used for advertising purposes, where brands put up ...

QR codes have been around a long time, since 1994 to be specific. While the QR code originated almost 30 years ago, the concept was slow to catch on with the general public. According to an article by ...

Getting your Trinity Audio player ready... Square, black-and-white barcodes are popping up far and wide. They’re on billboards streetside and at Denver International Airport, on store shelves at Best ...