The problem with electronic identities is that, while humans are very accustomed to trusting one another based on accidental disclosure (how we look, the prints we leave behind, and so on), all bits transmitted throughout computer networks are explicitly chosen and equally visible, recordable, and repeatable, with perfect accuracy. This portability of bits is a central tenet of the digital mindset; the intolerance for even the smallest amount of signal degradation is a proud stand against the vagaries of the analog world, with its human existence and moving parts. By making all signal components explicit and digital, signals can be amplified and retransmitted ad infinitum, much unlike the analog world where excess amplification eventually drowns whatever's being spoken underneath the rising din of thermal noise. But if everything can be stored, copied, repeated, or destroyed, with the recipients of those bits none the wiser to the path they may or may not have taken

Suddenly, the seemingly miraculous fact that data can travel halfway around the world in milliseconds becomes tempered by the fact that only the data itself has made that trip. Any ancillary signal data that would have uniquely identified the originating host and, by extension, the trusted identity of the person operating that host must either have been included within that data, or lost at the point of the first digital duplicator (be it a router, a switch, or even an actual repeater).

If accidental transmission is critical to human trust it's...