I can't access https://barcode.ideas.live.com/ properly, it's just loading... Ok now I tried with IE and it worked.

There is a tour and it seems that the QR Code application can be downloaded on smartphones. But the application cannot to be found! Try this one instead, hehe.

From the site:

What is Windows Live Barcode
Windows Live Barcode is a set of services that transfer information between various media (PCs, billboards, magazines etc.) and handsets via Quick Response Code (QR Code), a two-dimensional barcode. It provides a new method for people to exchange information and enjoy various online services on handsets. Windows Live Barcode aims to enhance handset utility and provide you with more convenience and flexibility.

Via M-Learning and Live-tr News