My request is that BitTorrent Sync for iOS can be customised to only backup the photographs taken with the stock camera app. At the moment it is possible to, for example, save images from Mobile Safari into the Camera Roll (long tap, Save), and these are inevitably also synchronised. It would be my preference that these files are overlooked. It could be possible to read the EXIF to determine if the photograph was taken with the Camera or not. Problems with my suggestion: People may use non-standard photo apps (Hipstamatic, Instagram, etc) which also add non-standard EXIF data to the images they add to the Camera Roll and they may want these synchronised. As an aside, and looking to solve my problem from the reverse angle, does anyone know of any Windows software which will automatically delete files if they do not meet certain EXIF criteria?