A variety of devices could be powered selectively from a single-power source carried on the body via multiple power supply signals at different frequencies, according to the patent abstract.
Apple could make use of this power source in the near future. 
( z1 possible :ARG1 ( z2 use :ARG0 ( z3 company :name ( z4 name :op "Apple" ) ) :ARG1 ( z5 source :mod ( z6 power ) :mod ( z7 this ) ) :time ( z8 future :ARG1-of ( z9 near ) ) ) )