[yetanother12345]

> participating online with other humans

There is a more significant case of "the end of anonymity", that of doing any kind of sale or purchase. The more sophisticated the possibilities for fraud become, the harder the authorities that be will (need to) push for public non-falsifiable identification (e.g. linked to your biometrics somehow, as I don't suppose a transplant ("chip") is politically feasible). If you need to trade, that is.

Consider that the past few years the use of cash is increasingly being phased out, or even outlawed (for amounts over a certain size) in various Western countries. With digital money comes digital fraud.

As a spooky aside, the Christian horror story "Mark of The Beast" is remarkably accurate in that respect, even if perhaps a bit too specific in the details (on hand or forehead) - but then magic glasses and -watches are here already.