I was recently asked by a client to help upgrade their application from Silverlight 4 to Silverlight 5. The upgrade worked perfectly except for one third-party assembly that had not yet been upgraded to Silverlight 5. The client only needed to use this assembly to generate QR Codes--those black-and-white barcode squares you often see people scanning on their smartphones—so my task was to find them a replacement QR Code library.

Sample QR Code

My colleague, Josh Eastburn, pointed me to a free option that was created for use in WP7 apps, but works just fine in Silverlight 5. You ...

Yesterday evening, my Falafel pals at Microsoft Tech Ed asked for a barcode to display in the Falafel booth so that attendees could easily find Falafel 2 Go in the Android Market.  The popular format for doing this is something called a “QR Code”, a 2 dimensional barcode that can embed links, emails, phone numbers, and other digital media. 

At first I was thinking it seemed a bit tedious for an attendee to have to use their camera to find our app in the Android Market.  While the QR Code can be used to embed many types of digital ...