  We study user preference between allocentric and egocentric 3D manipulation
on mobile devices, in a configuration where the motion of the device is applied
to an object displayed on the device itself. We first evaluate this preference
for translations and for rotations alone, then for full 6-DOF manipulation. We
also investigate the role of contextual cues by performing this experiment in
different 3D scenes. Finally, we look at the specific influence of each
manipulation axis. Our results provide guidelines to help interface designers
select an appropriate default mapping in this locally coupled configuration.
