Swallowing Microchips for ID

Another sensor development.    In this case for identification.  But also for reading the brain?   Overstatement I think.  " ... “This pill has a small chip inside of it with a switch,” said Dugan. “It also has what amounts to an inside out potato battery. When you swallow it, the acids in your stomach serve as the electrolyte and that powers it up. And the switch goes on and off and creates an 18 bit ECG wide signal in your body and essentially your entire body becomes your authentication token.” Dugan added that the chip had already been FDA approved and could be taken 30 times a day for someone’s entire life without effecting their health, a seemingly dubious claim. ... "