Gaze Translucency: input for Mirage 2013 conference paper

Description of gaze translucency for the REVERIE (*1) framework. (*1) REVERIE is a EU-funded IST PF7 project. Gaze translucency refers to the ability for users (1) to see whom some else is looking at and (2) to see who is looking [back] at them. The implementation in the REVERIE framework proposes to use the same modality that the framework already uses to visualize the feature. This text will be included in a joint MIRAGE 2013 conference paper from all partners active in WP7 of the project.