Hologram material created using existing assets in UDK, with the exception of a very simple line texture. The horizontal lines are mapped to the X-axis of the level and remain independent of any animation or movement. The material is very modifiable using instances. All 3D assets and textures by Epic, screenshot from UDK.
Examples of the material in motion;
http://www.youtube.com/watch?feature=player_detailpage&v=mXShHvw1asg
http://www.youtube.com/watch?feature=player_detailpage&v=J3kPd-sVDIo