To be more concrete: security keys can communicate over USB or NFC. Just make sure it supports the protocol you want to use it for.

But there is also passkeys which is both software- and hardware based and is almost equally secure.

I am, specially after seeing how well it was implemented in the nightly version. It can’t be compared to an extension that enables the same capability.

Matrix, xmpp, IRC or even rocketchat are better alternatives.

You have xing, but it’s big in DACH countries only and its still owned/ruled by a company. Roll up our own website and socialize / network with like minded people on the fediverse instead.

Matrix, I’d you want something truly open and respects user privacy.

Thank you for catching that for me!

Thanks for the suggestions :-)

I decided against arm-arch partially because RPI5 is out of stock (and I want to go with a brand name), and to avoid the extra hassle of having a HAT for a SATA driver.

As for the 8500t, I already have a SFF PC with a older CPU - but lower TPD than 8500 (but propably more noise). And I want to go lower. Also, the price difference in SEK between PN42 and those computers in your ebay link isn’t that big.

Actually, there is plently that can be done against screenshots (plenty apps does that). But someone who takes a photograph of the said phone viewing the picture is a different matter.