  Shared displays are well suited to public viewing and collaboration, however
they lack personal space to view private information and act without disturbing
others. Combining them with Augmented Reality (AR) headsets allows interaction
without altering the context on the shared display. We study a set of such
interaction techniques in the context of network navigation, in particular path
following, an important network analysis task. Applications abound, for example
planning private trips on a network map shown on a public display.The proposed
techniques allow for hands-free interaction, rendering visual aids inside the
headset, in order to help the viewer maintain a connection between the AR
cursor and the network that is only shown on the shared display. In two
experiments on path following, we found that adding persistent connections
between the AR cursor and the network on the shared display works well for high
precision tasks, but more transient connections work best for lower precision
tasks. More broadly, we show that combining personal AR interaction with shared
displays is feasible for network navigation.
