Now on the right place, I hope.

Hi,

The title says it all.
Howmany pictures have I lost because I had to unlock the phone before I can shoot...

So I was wondering if (I have searched and found nothing) there could be a way to take a picture from the lockscreen or something like that.

Of course I could deactivate lockscreen but I'll for sure forget to reactivate it or will have to take a picture just after reactivating it.

Any suggestion?
Cheers
Eric

P.S. Recording sound the same way would also be great. Even without to switch it on, only by a long press on the camera button for instance...