If unsolved Google puzzles keep you up at night, you now have one less reason to go sleepless: the Google I/O T-shirt enigma has been unraveled. The picture above contains a series of dots and dashes, which our friends at MobileCrunch recognized as Morse code. Using the line breaks as spaces (new characters), the code then reads:
.... - - .--. --. --- --- .-.-.- --. .-.. .- ....- -.-. -.... ...-- ----.
That translates to a URL, which we've linked to below. We won't spoil where it leads, in case you're feeling noble enough to try decoding it for yourself.