“We live between two realms: our physical environment and cyberspace. Despite our dual citizenship, the absence of seamless couplings between these parallel existences leaves a great divide between the worlds of [computer-generated] bits and [real physical] atoms. At present, we are torn between these parallel but disjoint spaces” (Ishii & Ullmer, 1997, p.234). These ‘spaces’ each have unique qualities that the other cannot provide. Real objects can be physically handled and naturally manipulated to be viewed from any direction, which is essential for ergonomic evaluation and provides a strong sense of palpability (Ishii & Ullmer, 1997). Although ‘simulated’ haptic feedback devices enable some aspects of computer-generated objects to be ‘touched’, they can not match this level of functiona