1. A method, comprising: at a first electronic device that includes one or more input components configured to detect pressure of contacts with a touch-sensitive surface, a first processor, and memory storing instructions for execution by the first processor: detecting a contact on the touch-sensitive surface; and, in response to detecting the contact on the touch-sensitive surface: determining a pressure of the contact on the touch-sensitive surface; generating a first input command based on the pressure of the contact on the touch-sensitive surface, wherein the first input command includes a command selected from a predefined set of commands; processing the first input command with a first set of instructions on the first electronic device to update a display of the first electronic device; and transmitting the first input command from the first electronic device to a second electronic device, that is distinct from the first electronic device and includes a display, a second processor distinct from the first processor and memory storing instructions for execution by the second processor, for processing on the second electronic device so that the transmitted first input command is processed with a second set of instructions on the second electronic device to update the display of the second electronic device, wherein the first set of instructions is distinct from the second set of instructions; wherein the update to the display of the second electronic device corresponds to the update to the display of the first electronic device; and the update to the display of the second electronic device changes graphical information on the display of the second electronic device in accordance with the pressure of the contact on the touch sensitive surface, and the update to the first electronic device changes graphical information on the display of the first electronic device in accordance with the pressure of the contact on the touch sensitive surface.