The Synchronous Picture Frame is a pair of picture displays that allows users to share pictures with each other. Pictures displayed synchronously on the device of each user and this enhances a joint discussion about the pictures.
Reference: Eva Lenz, Marc Hassenzahl, Wasili Adamow, Patrick Beedgen, Kirstin Kohler, Thies Schneider. 2016. Four Stories About Feeling Close Over A Distance. In Proceedings of the TEI '16: Tenth International Conference on Tangible, Embedded, and Embodied Interaction. 494-499.
https://vimeo.com/148869457