Did you know that, for a brief few years, Motorola (or more accurately, Motorola Mobility) was owned by Google? If you didn't know that, then you likely also don't know that, in those two cursed years, Motorola showed off a password pill you swallow as a form of password authentication. Yeah, 2013 was weird.
As brought to my attention by Hackaday, this password pill would house a small chip that would dissolve in your stomach and emit an 18-bit ECG-style signal from your body. Regina Dugan, the then-research head at Motorola, said, "Essentially, your entire body becomes your authentication token."
