What is an LCD, and how can it be sprayed onto surfaces and connected to computers?
LCD stands for Liquid Crystal Display, which is one of the technologies used to make computer displays and television screens. At the current level of technology in the real world, an LCD can’t be sprayed onto a surface (though liquid crystals themselves can). But the assumption that a spray-on LCD will be possible in the future is at least as reasonable as any other assumption made in current science-fiction literature. Essentially, a spray-on LCD would allow a character to make a visual display on any flat surface. Once the technology has reached that point, it’s fair to assume the existence of some other piece of equipment that would allow a character to connect that visual display with a computer or other signal source. The paint-on LCD gadget from the d20 Future supplement allows any object to become a display. Thus, a character could have a jacket that displays movies from a portable DVD player, a gun with time and temperature updates constantly running along its barrel, or glove
