Introductions Yandex Key – your passwords
Key creates one-time passwords and codes for 2-factor authentication process
Yandex.Key is an authenticator generating one-time passwords (OTP) for Yandex, Google, GitHub, Dropbox, Vk.com, and other services with two-factor authentication (2FA). To log in to Yandex, enter this one-time password instead of your regular password, and to sign in to other services, with your normal password.— Data protection
Yandex.Key safeguards your account from being hacked and your personal information from being stolen. One-time passwords will be available only to you, on your mobile device.
— Security standards
Yandex.Key supports two-factor authentication (or two-step verification) on all services using RFC 6238 and RFC 4226, except for services which only use sms.
— Backing up
Back up the data in Yandex.Key on Yandex's servers, to use in case something happens to your device. It's secure: you backup is encrypted using a password that only you know.
For more detail, please see https://ya.cc/2fa-en
