Hello everyone! This is Direwo... wait, no... But, since I've caught your attention now, I'd like to show you a mod that I've been creating for some time now. The Mod is called OpenGlasses ans is an extension to OpenComputers.It is analogous to glasses from the OpenPeripherals add-on for ComputerCraft, but adds a few more nifty features.
OpenGlasses is a mod which adds Augmented Reality features to Minecraft. You can render objects, like shapes and text both in the world and on the players HUD, only visible to those with the Open Glasses on (think Google Glass, but in blocky form).