QR codes have therefore become a useful advertising technique for many organizations. You can convert your website address to a QR code for free using a variety of online tools.

Ever wonder what those weird black-and-white square codes are? Here's how to read them with an iPhone, a BlackBerry, or an Android smartphone.

Have you seen those barcode-looking things recently but haven't got the slightest what they're for? After this post, you'll see how they might just end up making your life a little bit easier one day!