  In the everyday context, e.g., a household, HMD users remain a part of the
social life for Non-HMD users being co-located with them. Due to the social
context situations arise that demand interaction between the HMD and the
Non-HMD user. We focus on the challenge that the Non-HMD user is not able to
interpret the HMD user's state -- e.g., attentiveness; the need for assistance
--, as the HMD covers the wearer's face. We propose a front facing display
attached to the HMD that supports collaboration by showing the state. We
explore the impact of abstract and realistic visualizations for such displays
on collaborative performance and social presence in a within-subject user study
(N=25). We present to the Non-HMD user (1) a blank screen (baseline), (2)
textual representation of the user's state and (3) a representation that looks
like the HMD is see-through. The results show positive effects for textual
representation on collaborative performance and a positive effect of realistic
representation on social presence. We conclude that when developing HMDs we
need to take into account the social needs of everyday life to reduce the risk
of social separation in a household context.
