This pixelated typeface is based on the binary encoding system of the Arecibo Message sent to the globular star cluster M13 on 16th November 1974 to mark the remodeling of the Arecibo radio telescope in Puerto Rico. Capital letters are based on a 10 x 10 grid used to represent the height of an adult male, lowercase are larger 5 x 5 blocks just to add clarity to the glyphs.