Thanks to a Google+ post by +Frank Warwick, here is a useful blog post from Mashable about QR/Flash readers for Android phones…
QR codes are used to reveal more information about a product, service, event or person. Generally, they direct the scanning device to a special URL, video, coupon, event page, email address, or other digital signpost with more details and content.
To scan the codes, all you need is a mobile device with a camera and an app to interpret the data in the code
Read more on 7 Free QR Code Reader Apps for Android [PICS]
