And as you can see, the red dot is tracking his movements very accurately, purely based on how his body interacts with the surrounding wireless signals.

正如你所看到的， 红点非常准确地跟踪他的动作，完全基于他的身体如何与周围的无线信号相互作用。

And I remember one Pentagon adviser telling me that what the military really needed were space-based satellites that could track people anywhere on earth based just on their DNA. It's enough to make you invest in tinfoil hats.

我记得五角大楼的一位顾问告诉我，军方真正需要的是能够仅根据 DNA 追踪地球上任何地方的人的天基卫星。这足以让你投资锡箔帽。