Google’s logo for Google IO is the binary values of ASCII IO, with white circles for 1 and black circles for 0. Their slides do the same thing, but with large and small circles:
The t-shirts they’ve given us use the same coding to spell out Google IO. Except they spell Google KO instead:
Their own t-shirts say the same thing, but in black on white instead of white on black.
A mistake? Or a threat to potential competitors?