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Bitwarden has launched a new authenticator app
(bitwarden.com)
This is a most excellent place for technology news and articles.
I use Authenticator on Linux. I'm not sure what OS you use, but perhaps there's another, TOTP is a pretty easy protocol to implement (it's basically just a hash of a key and timestamp).
I would like an app for desktop and phone/tablet that are syncing, just like Authy did, before they abandoned the desktop app.
So, for me that means: iOS/iPadOS and macOS