I've just noted that Chrome OS Dev Channel has an experimental handwriting recognition mode you can play with now by enabling the On-screen keyboard in the Accessibility settings.

Once the On-screen keyboard is visible, tap or click the⋮key and pick the handwriting mode. For information, since it uses the Google Input Tools¹ API, this mode only works when you're connected to the internet.

Still, it's still fun to draw smileys on the keyboard and get it recognized ☺

¹ http://www.google.com/inputtools/
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