Turning up in person. The way to deal with LLM spam will be to force people back to government offices, during the week, 9-5, with ID and bag checks and so on. This is hugely inefficient but the only way to keep out the avalanche of LLM spam.

It'll work for now, at least.

I fully expect that in my lifetime someone will offer a service of tissue-culturing just enough to make an inverse-cyborg* to handle all your, ahem, meat-space obligations.

I mean, I'm already following one YouTuber who is doing a small-scale version of this with mouse flesh as a long-running series.

* living flesh covering some amount of compute/robot, rather than a human augmented by machine. I take no position on where this will be on the scale from "everything's organic except the brain which is a microchip powered by blood sugar" to "the only biological component is the skin, everything else is a robot and silicon chips".