Earlier today, Google quietly added a new search-by-handwriting feature for tablets and smartphones. To enable this feature in Google, simply head to your preferences or search settings to enable handwrite mode.
By doing this, you will add a toolbar at the bottom of your Google that offers quick access to a help menu. Also on this toolbar is a spacebar and backspace key, the cursive "g" will turn off the setting temporarly so you can select search results.
I found that it worked pretty well, at least until you wanted to enter touch mode instead of handwriting mode. I have pretty bad handwriting, but it seemed to recognize it pretty well.