The document discusses developing a Collabrify client for Windows Phone 8 (WP8). It would allow Collabrify's collaborative features to be used in WP8 apps, as Collabrify currently only supports iOS and Android. The solution is to design a Collabrify WP8 client using Google Protocol Buffers for communication with Collabrify's existing cloud backend. This would enable WP8 apps like WeKWL, WeMap, and WeDraw to leverage Collabrify's real-time collaboration.