Red Decoder Screen (Pack of 8) and 25 similar items

These red screen decoders allows budding spies to write secret messages! The red-screen decoder works because some colors of ink are difficult to see through the red-screen decoder, specifically reds, oranges, yellows, and pinks. To write a secret message that can be read with a red-screen decoder, simply write your message in cool colors (thats blue, purple, and green) with the letters spaced out. Then, fill in the spaces with random letters written in warm colors (thats red, orange, or yellow). When you hold the red-decoder screen, the letters written in red, orange, yellow, and pink will disappear! Decoders are approximately 2.5" square with a 1.5" red screen.