Reference 

E. Munguia Tapia, S.S. Intille, J. Rebula,  S. Stoddard. Concept and Partial Prototype Video: Ubiquitous Video Communication with the Perception of Eye Contact. Proceedings of UBICOMP 2003 Video Program, 2003. 
[PDF] [Video (MPEG v.1 AVI)]

Abstract 

This concept and partial prototype video introduces a strategy for creating a video conferencing system for future ubiquitous computing environments that can guarantee two remote conversants the ability to establish eye contact. Unlike prior work, eye contact can be achieved even as people move about their respective environments engaging in everyday tasks.

Keywords 

Eye-contact, video conferencing, context-aware computing.