| http://www.w3.org/ns/prov#value | - In some embodiments, base layer 209, cover layer 211, or an intermediate layer (not shown) integrated in or attached to multifunction device 100 may serve as a shielding layer designed to isolate position indicating elements 203 and 205 from stray electromagnetic signals such as, for example, those that might be generated by the heart or other stray electrical signals.
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