Currently the android version of btsync has facility to share a single file by just selecting the file and scanning the qr code generated. The issue with this facility is that the files can only be shared with people who are in close proximity, basically people who are in range of bluetooth or NFC. btsync can do much better if the text hash is copied to the clipboard so that the hash can be sent over SMS / chat / email and thus enable sharing files with someone who is geographically at a distant location and not within field of view or with devices that do not have a camera.
