Scalable metadata in- and output for multi-platform data annotation applications

Metadata in- and output are important steps within the data annotation process. However, selecting techniques that effectively facilitate these steps is non-trivial, especially for applications that have to run on multiple virtual reality platforms. Not all techniques are applicable to or available on every system, requiring to adapt workflows on a per-system basis. Here, we describe a metadata handling system based on Android´s Intent system that automatically adapts workflows and thereby makes manual adaption needless.