This report documents "field studies in actual work contexts to map how participants solve physical tasks with remote help powered by augmented video calls, and examined how the drawing feature was used in these contexts... augmented video calls enhance remote collaboration by allowing workers to point at task objects and locations, thus potentially improving informal workplace learning." It's interesting to see how far back work in this field goes - some of the early references date from the 1990s. The research involved the development and testing of the open source SoAR (Social Augmented Reality) Android app "that enhances video calls for the purposes of asking questions and providing guidance in context-dependent work situations." SoAR was created for the construction sector in Finland and incorporated a vision-sharing feature "that enabled augmented interactions on top of the live video stream and allowed participants to communicate by drawing on the video call."
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