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.
This device will be built in China whenever mass production of it starts. 
( z1 build :ARG1 ( z2 device :mod ( z3 this ) ) :location ( z4 country :name ( z5 name :op "China" ) ) :time ( z6 start :ARG1 ( z7 produce :ARG1 z2 :mod ( z8 mass ) ) :mod ( z9 any ) ) )