Sometimes tablet and smartphone keyboards aren't ideal for quick search so Google has enabled a beta feature called Handwrite. Users can use their fingers to write search terms. A simple and smart idea actually rests on a a numner of technologies like handwriting recognition and search logic. Still in beta (your mileage may vary), it's only a matter of time before Google makes this a standard on compatible devices.
It's available on Google.com from your smartphone or tablet, and is activated in your mobile search settings.It's not always easy to use the keyboard on your phone or tablet, especially when you're on the go. Instead, try Handwrite (beta) on Google.com to write your search terms with your finger rather than typing the words on the keyboard. As you write, your handwritten text converts into words in the search box.