> Why can my Linux box not act as an authenticator That is a really good question. For whatever reason, I'm not aware of a single Open Source platform authent

> Why can my Linux box not act as an authenticator That is a really good question. For whatever reason, I'm not aware of a single Open Source platform authenticator for any platform. It seems to me like that would be a pretty big priority for an Open standard, but what do I know? Google has said they have "no plans" to support platform authentication on Linux[0]. I don't know if this is just them saying they don't plan to build a platform authenticator themselves, or if they're saying that if a Linux box advertises that it has a platform authenticator, they're not going to trust it. Either way, passkeys basically require you to either buy a Yubikey/dongle (which will not support cloud sync) or to use a proprietary OS as your authenticator. https://developers.google.com/identity/passkeys/supported-environments#:~:text=Passkeys%20from%20Google%20Password%20Manager%20are%20available%20to%20all%20Android%20apps%2C%20including%20Chrome%20and%20other%20browsers https://developers.google.com/identity/passkeys/supported-en...