CanCan is a button that is added to ordinary objects (e.g., wrist watch). It corresponds to the meaning “can’t be there for you right now.” The depression of the button leads to notification light at the partner’s end either on a computer terminal, a phone or a watch.
Source: Bhandari, S. and Bardzell, S. 2008. Bridging gaps: affective communication in long distance relationships. In Proceedings of the 26th Annual CHI Conference Extended Abstracts on Human Factors in Computing Systems (CHI’08). ACM Press, 2763–2768.
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