Smart products bring their own design challenges. Internet-connected devices and plastic filled with electronics behave in unexpected ways: what does it means for a physical thing to side-load its behaviour, or for a toy to have its own presence in your social network? What we’ve learned about user experience on the Web is a great place to start: social software, adaptation, designing for action creating action — these are principles familiar on the Web, and still valuable when design is not on the screen but in your hands.