Ambient Findability
In this book Peter Morville explores how the 'sea of bits' meets the 'land of atoms'. Or in other words how we may combine physical reality with our digital on-line perspectives. Ambient systems, accessing information within the environment, form a different user interface than the usual laptop or pc screen. Adding an information layer to our physical environment is in my eyes a major step we are about to take.
If you ever thought 'virtual' means unreal and has no connection to reality, think again. Or read this book.