  While walking meetings offer a healthy alternative to sit-down meetings, they
also pose practical challenges. Taking notes is difficult while walking, which
limits the potential of walking meetings. To address this, we designed the
Walking Talking Stick -- a tangible device with integrated voice recording,
transcription, and a physical highlighting button to facilitate note-taking
during walking meetings. We investigated our system in a three-condition
between-subjects user study with thirty pairs of participants ($N$=60) who
conducted 15-minute outdoor walking meetings. Participants either used clip-on
microphones, the prototype without the button, or the prototype with the
highlighting button. We found that the tangible device increased task focus,
and the physical highlighting button facilitated turn-taking and resulted in
more useful notes. Our work demonstrates how interactive artifacts can
incentivize users to hold meetings in motion and enhance conversation dynamics.
We contribute insights for future systems which support conducting work tasks
in mobile environments.
