Another guide to multi-screen UX, which comes with some great examples.
“The third category of app ecosystems the continuous multiscreen experience, which is possibly the most important category for a contextual multiscreen design…AllRecipes is an example of a continuous ecosystem where one can search for recipes online using a desktop computer and add ingredients to create a shopping list. While shopping, this list is accessible using a smartphone, the device most likely to be carried while shopping. The app also allows one to scan products using the camera and receive additional recipe ideas with greater ease. When it’s time to cook, an iPad can be brought into the kitchen for a cook-friendly interface with large fonts and big buttons so the user can touch the tablet with a knuckle in case of wet or messy fingers. The tablet’s larger screen is a perfect size for the kitchen, much like a traditional cookbook resting on the counter.”