Google loves to play along with the holidays, especially geek beloved April Fools. Since most people are fascinated and surprised by what geeks do on a regular basis already, April Fools pranks coming from them are that much more believable.
For 2012, Google has introduced Gmail Tap. It’s basically Morse Code for your smart phone. Even though it’s an April Fools gag, the idea seems to have a lot potential once explained by the Googlers.