VideoKifu (by Andrea Carta & Mario Corsolini) reconstructs the whole move sequence of a Go game from the video feed provided by the camera of a smartphone or tablet. It may save a time-lapse video and it creates SGF files that may be published in real-time on the Internet.
Further info, examples of operation and a free demo version (for Windows) are available on the official VideoKifu website:
www.oipaz.net/VideoKifu.html