The Electronic Intelligence Indicator can be placed on the side of a block like an item frame. When given a redstone energy pulse its texture changes. Normally it has a blue background with a black "X". When powered by redstone, it changes to an orange background with a gray checkmark. This could be used to tell a player when they have done something correctly. Its crafting recipe can be made in any crafting table. It is made by crafting an iron ingot on the left, a piece of redstone in the middle, and a glass block on the right. It is from the portal gun mod.
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