Systems and methods to enable interactivity among a plurality of devices

Methods and systems to exchange and display data among a plurality of devices in response to one or more of user input and context-based information. User input may include one or more of motion, speech, text, pointing, and touch-selecting. Context-based information may include one or more of user location, which may be relative to one or more devices, background audio, information related to one or more products and/or services, and user-based context information. User context-based information may correspond one or more of prior transactions, prior activities, prior content exposure, and demographic information. Also disclosed herein are methods and systems to correlate user speech to one or more of commands and data objects, with respect to context-based information. Methods and systems to recognize speech may be implemented in combination with methods and systems to exchange and/or display of data among a plurality of devices, and in other environments.