| http://www.w3.org/ns/prov#value | - The local surface image transducer FIG. 2(a) is designed to be hand held and contains one or more tactile-feel pushbuttons (or other type of switch) 222 which are used by the operator to control the hardware and software, for example to signal the apparatus of the exact instant to acquire one or more images from the image transducer apparatus, to switch between the local and global transducers, or
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