Press "a" to send a broadcast notify message and it should be visible on other devices.

You should *not* be running this as root, nor should you need to. There's nothing hard about putting /opt/bin into your PATH and simply typing "fuppes" at an rxvt. If somebody else wants to build a .desktop wrapper for it - go ahead. There's a reason I've only provided a binary package and am not remotely interested in putting it into the repository.