Hackers' Pub

I've recently signed on with a very new XMR based market site similar to MoneroMarket & XMRBazaar called "Monero United":

http://mj3kba27wxj5ai6jdp5t3gxuzkxfycxwttglvz2edkichegye2etivqd.onion

I'm not a natural evangelist of these kinds of things, and I'm a skeptic of anything new out of practicality. But I'm impressed by one thing they've enabled... PGP-key Based 2FA.

I'm asked to submit a pubkey when I make an account. If 2FA is enabled, it gives me a verification code encrypted with my own pubkey on login, which I have to decrypt with my privkey & then submit to complete 2FA.

Maybe this has been done elsewhere, but this is the first time I've encountered it and I find it a very neat and elegant 2FA method compared to many alternatives.

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`