

A white skull with clock faces and interlocking gears filling its forehead, surrounded by black ink splashes and fine splatter. Two square eye sockets and a solid framed square on the forehead hide the finder squares. The code modules are carried by the clock dials and cog teeth, which read as patterned black and white fragments. Strict black on white contrast and bold outlines keep the pattern clear, while the grey smudges stay light and away from the data.