[PD] GEM without window

[jma at jeanmarie-adrien.net]

Hi List
Is there a way to use pix_video / data / blob etc without being able to watch / see the video image (for privacy issues) ?
no gemwin ? no gui ?
(i know if i do not texture to a rectangle or so, i get a black gem window, and i can still use pix_objects but is there a "radical no return safe" way to keep image far from eyes ?) 
Thanks !
Jm