Comment 9 for bug 1299073

It doesn't work for me, camera-app is using /dev/video0 and there is only 1 instance of the app.
$ sudo fuser -v /dev/video0
[sudo] password for ubuntu:
                     USER PID ACCESS COMMAND
/dev/video0: ubuntu 2153 F.... camera-app
$ ps aux|grep came|grep -v grep
ubuntu 2153 29.4 1.9 1840568 74648 pts/0 Sl+ 15:53 0:35 camera-app
ubuntu@canonical-fx3dpy1:~$
[Exit camera-app]
ubuntu@canonical-fx3dpy1:~$ sudo fuser -v /dev/video0
ubuntu@canonical-fx3dpy1:~$