I agree, but they are choosing a dead end path: whoever wants to know where they are can sample DNA from as many relatives as possible, surreptitiously. Nanop

I agree, but they are choosing a dead end path: whoever wants to know where they are can sample DNA from as many relatives as possible, surreptitiously. Nanopores can be made with dielectric breakdown of a thin piece of etched wafer. Low input current noise op-amps can be used to measure the nanopore signal. A dedicated skip tracer will find you through environmental DNA.