Ubiquitous computing, also known as ubicomp, represents a scenario where computer devices are omnipresent usually with a look not like traditional computers. Nowadays there is also a close relation between ubicomp and human-to-computer interaction. With the appearing of new computer devices spread along the environment, new interfaces to resolve human-to-computer interaction have to be explored. This book presents a ubiquitous computing scenario that uses iStuff toolkit as communication channel. Nintendo''s WiiRemote, known as wiiMote, is used as new human-to-computer device to allow user interaction. WiiMote communicates with a computer using WiiGee java libraries which includes an iStuff proxy and allows communication with the scenario. This scenario also includes a collaborative application, called Collaborative Tetris, to interact with. This book should be useful as first contact to ubicomp environments and also to readers interested in new ways to expand new human-to-computer scenario to ubiquitous computing environments.