This is a quick definition of Ubiquitous Computing (taken here), maybe not the most accurate but short as I needed (especially given that I cut the definition!).
Generated with Kaywa QR code generator that I am testing with the Kaywa reader. The QR code generator allows to create a QR code linked to different content (opening a webpage, sending an SMS, calling someone or displaying a text message). You can do that in almost 2'. Good job!