Tangible user interface; Organic user interface; Natural user interface; Guides; Craftsmanship; Immateriality.

In this paper, we present the novel concept of ephemeral
user interfaces. Ephemeral user interfaces contain at least
one user interface (UI) element that is intentionally created
to last for a limited time only and typically incorporate materials

that evoke a rich and multisensory perception, such
as water, fire, soap bubbles or plants. We characterize the
term “ephemeral user interface” and, based on a review of
existing user interfaces that fall into this research area but
have not been discussed under one common term before,
we present a design space for ephemeral user interfaces
providing a terminology for (a) materials for ephemeral UI
elements, (b) interaction and (c) aspects of ephemerality.
This paper contributes to the ongoing research on materiality

of user interfaces as well as on conceptualizing visionary
interaction
styles
with
novel
materials.


7th International Conference on Tangible, Embedded and Embodied Interaction