Secure all of your devices with one simple and easy authentication app: Duo Mobile, a two-factor authentication (2FA) and multi-factor authentication (MFA) solution. It's fast and easy to log in securely with Duo Push, the more secure method of two …

Protect your workforce with Cisco Duo’s industry leading suite of identity security solutions, Single Sign-On (SSO), and Multi-Factor Authentication (MFA).

Duolingo is the world's most popular way to learn a language. It's 100% free, fun and science-based. Practice online on duolingo.com or on the apps!

Download and Install Duo Desktop. Duo Desktop checks the health and security posture of macOS, Windows, and Linux devices at every login. See how your workforce can download and start using Duo Desktop in just a few steps.

Stay connected and collaborate with friends, family, and colleagues no matter where you are. Join a meeting now using the unique code at the end of your meeting link. It'll look something like...

Video calls with anyone in your contacts who uses Duo: Call friends and family across different devices like Android, iOS, computers, Nest Hub, Nest Hub Max, Lenovo Smart Display, and JBL Link...

Duo Mobile on Android. The Duo Mobile application makes it easy to authenticate — just tap “Approve” on the login request sent to your Android device. You can also quickly generate login passcodes, even without an internet connection or cell service.

基于 Duo 的 Secure Access 是一个以用户为中心的零信任安全平台，提供双因素身份验证来保护所有用户、设备和应用对敏感数据的访问。

duo翻译：（歌手、乐手等的）二人组合，一对搭档。了解更多。

Duo is a service you use for multi-factor authentication (MFA). Register a device with Duo, and then choose one or more methods by which to authenticate. You can: Receive a push notification on your mobile device; Generate a passcode with a YubiKey; Generate temporary passcodes