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 ...

When you open QR.io, it looks like this. QR codes can be converted to URL links, email addresses, texts, phone numbers, SMS, Whatsapp, Wi-Fi profiles, personal information for profiles, PayPal ...

Since most people are carrying a camera-equipped computer in their pockets these days, QR codes can be a great way to easily share short snippets of information. You can put one on your business card ...