Description

Yandex.Key is an authenticator generatingone-time passwords (OTP) for Yandex, Facebook, Google, GitHub,Dropbox, Vk.com, and other services with two-factor authentication(2FA). To log in to Yandex, enter this one-time password instead ofyour regular password, and to sign in to other services, with yournormal password.

— Four digits
You no longer have to invent complex passwords to protect yourYandex account. There are just four digits to memorise: they’ll beused by Yandex.Key to generate a unique one-time password valid forless than a minute.

— Data protection
Yandex.Key safeguards your account from being hacked and yourpersonal information from being stolen. One-time passwords will beavailable only to you, on your mobile device.

— Easy setup
You can add accounts manually, by entering the data from theservice you want to use, or automatically, by scanning a QR-codeprovided by this service.

— Offline use
Yandex.Key doesn’t need internet connection to add accounts andgenerate one-time passwords, and you don't need to wait for an SMSwith your password.

— Additional features
The Key can general six- and eight-digit passwords, depending onthe service’s requirements. Besides, the Key can update one-timepasswords at different intervals, not necessarily once in every 30seconds (this depends on the service).

— Security standards
Yandex.Key supports two-factor authentication (or two-stepverification) on all services using RFC 6238 and RFC 4226, exceptfor services which only use sms.

— Backing up
Back up the data in Yandex.Key on Yandex's servers, to use in casesomething happens to your device. It's secure: you backup isencrypted using a password that only you know.

For more detail, please see https://ya.cc/2fa-en