1. A method practiced with a particular apparatus, namely a cell phone including a microphone, a cellular radio transceiver, a processor, and an image sensor, the method comprising the acts: forming plural keyvector packets based on a frame of imagery captured by the image sensor, a first of said packets containing a first set of image information for performing a first visual task, a second of said packets containing a second set of image information for performing a second visual task, the first and second sets of information being different, and the first and second visual tasks being different, at least one of said packets comprising less than a single frame of image data; routing one or more of said keyvector packets for processing by the cell phone processor, and also routing a different one or more of said keyvector packets for processing by one or more processors remote from the cell phone; and employing both (a) data resulting from processing of said routed keyvector packets by the cell phone processor, and (b) data resulting from processing of said routed keyvector packets by the one or more processors remote from the cell phone, in generating result information for presentation to a user; wherein the image sensor is formed on a substrate, and said processing by the cell phone processor employs circuitry formed on said substrate.