KeePassXC is a fork of a fork, most recently to spur the development of what was KeePassXC that had very slow development, and is now dormant. Well that is exactly what KeePassXC and KeePass2Android support.

That said, if it were possible to have seeds in a more generic encrypted database with access to generated codes, that would be better (especially if multi-device, cross-platform). Other than that, it is a reasonable approach and beats out Google Authenticator, and the sheer add once, access across multiple apps is definitely a modern desire. Authy Apps, Synchronization, and Cloud BackupĪuthy is the best (and free) solution, though it does have a third-party involved (namely their cloud backup/sync application).

Backups can be made of seed codes (QR Codes and/or the string that is represented). The problem with a single virtual device is the well-known issue of losing it (such as a phone that the software is kept on). When not virtual, it is a dedicated hardware device (banks like to make you have their particular hardware device), though there can be multiple copies of the hardware device (as in multiple Yubikeys). Sometimes this key is tied to a device (as in the case of the Google Authenticator). This means not only a password but some other kind of evidence is needed. OTP in software (virtual device) is needed, and is the most convenient approach to having some kind of 2FA (two-factor authentication). Keepass2Android Mobile Application OTP / TOTP Seed + Generator

Keepassxc extension