1. A method, comprising: receiving optical input via one or more optical sensors of a mobile device: analyzing the optical input using a processor of the mobile device to determine a context of the optical input; and automatically invoking a contextually-appropriate workflow based on the context of the optical input.
3. The method as recited in claim 1 , wherein the context comprises one or more of: a type of document represented in the optical input; and a content of the document represented in the optical input.