13. A computing device as described in claim 12 , further comprising a rendering engine configured to render content for the applications, wherein the recognition interface is exposed to the applications via the rendering engine.
13. A computing device as described in claim 12 , further comprising a rendering engine configured to render content for the applications, wherein the recognition interface is exposed to the applications via the rendering engine. 14. A computing device as described in claim 13 , wherein the rendering engine is implemented as a component of a browser.