The 60 GHz signal can not typically penetrate walls .
The 60 GHz signal can not typically can propagate off reflections from walls , ceilings , floors and objects using beamforming built into the WiGig system .
The 60 GHz signal can not typically penetrate walls but can propagate off reflections from walls , ceilings , floors and objects using beamforming built into the WiGig system .