An exporter for Duo Mobile 2FA codes into actually-free apps. Basically, I don't trust Cisco's Duo Mobile app to run on my own phone.
See also: the accompanying blog post.
- Go to the Duo Security portal
- Try to register a new Android tablet
- Save the QR code that the portal gives you.
- Run the program:
$ cargo run --release -- path/to/qr.png
# ... a big QR code
- Scan the QR code with an open HOTP app like FreeOTP.