"A model watches Haruka, a 3D floating vision receptionist, speak to her as she approaches Haruka's desk at CEATEC Japan 2005 exhibition in Makuhari, east of Tokyo. Haruka is a product by Pioneer Precision Machinery, a 3-D floating vision developed on commercial basis for the first time. The reception box measures 21x18x21 centimeters (8.4x7.2x8.4 inches) and the 3-D image talks to you when you come by her desk." -- Mainichi-MSN via I4U
On a related note, LightSpace Technologies unveiled what they claim to be the world's first solid-state volumetric 3-D display, called DepthCube. Engadget says the DepthCube looks like DeepLight, a competing display.