For anyone that does challenge-response with a Yubikey like I do, I'd suggest Keepass2Android Password Safe[1] if you're on Android. I've been using it for year

For anyone that does challenge-response with a Yubikey like I do, I'd suggest Keepass2Android Password Safe[1] if you're on Android. I've been using it for years and it's well maintained in terms of updates and features, and it supports the KeePassXC challenge-response method. Edited to add: And it's open source[2]. [1] https://play.google.com/store/apps/details?id=keepass2android.keepass2android&hl=en https://play.google.com/store/apps/details?id=keepass2androi... [2] https://github.com/PhilippC/keepass2android https://github.com/PhilippC/keepass2android