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Learn about ZenKey

Use ZenKey and our network for a more secure way to protect your personal info when you sign in to apps and websites.


What is ZenKey

ZenKey is an app that offers a more secure way to sign in online. Unlike other third-party sign-ins, ZenKey uses our network to verify your identify.

How it works
After you create an account:
  • You’ll get a device-based ID. ZenKey uses this ID and your AT&T profile info to confirm you’re really you. It also verifies your phone number and SIM card to provide an extra layer of protection.
  • When you connect to an app or website that accepts ZenKey, we’ll pass along the info you agreed to share. This provides a fast and secure way to connect.

For example, say you want to transfer money online. You sign in to your bank’s app with ZenKey. The ZenKey app will verify your identity and grant access to the bank’s app or website. When you request the money transfer, the bank will send the authorization notice to you through ZenKey. Simply approve the request and you’re all set!

About ZenKey
ZenKey was formed by the Mobile Authentication Taskforce, which includes AT&T, Sprint®, T-Mobile®, and Verizon®. ZenKey collects and shares device and account data with your wireless carrier. That way, you can easily and more securely authenticate, sign up, and sign in.
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Get ZenKey and device requirements

Download the ZenKey app from the Apple App Store or Google Play. Have an Android® device? Make sure you also have the AT&T Security Services app.

Find out how to set up your ZenKey account

To use ZenKey from your Apple® or Android smartphones, make sure you’re using one of these
operating systems:
  • OS 11.0 or greater for Apple
  • Android 7.0 Nougat or greater for Android

Be sure to include a face or fingerprint scan if you want to use:
  • FaceID® or TouchID® (Apple)
  • Trusted Face® or Trusted Fingerprint® (Android)
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Learn about ZenKey features

With ZenKey, you can enjoy:
  • Sign-in security: We protect your identity using unique account and device details on our network.
  • An added layer of authentication and verification: We use our network intelligence to verify your identity by matching SIM cards to device-owner details.
  • Transparent data management: You control what info gets shared and what stays private. For example, you can add your tablet as a trusted device or set up a face or fingerprint ID.

ZenKey uses mobile and profile security to authenticate you. These features include:
  • Mobile security
    • Network-based device authentication
    • Geo-location
    • SIM card recognition
  • Profile security
    • AT&T user ID
    • ZenKey ID and PIN
    • Biometric fingerprint (Touch ID® or Trusted Fingerprint®)
    • Face recognition (Face ID® or Trusted Face®)
    • Trusted devices
    • Recovery codes

Other ZenKey features
  • Push notifications share security and authentication info.
    • On Apple devices, notifications go away after you unlock your phone.
    • On Android devices, the notification stays on the screen until you clear it.
  • Authentication protocols support your apps on the backend. After a successful authorization by ZenKey, you can access a website or app. There are 2 different types of authentication:
    • First-factor authentication lets you sign up with primary sign-in verification.
    • Second-factor authentication works with companies you’re using, like a bank or music app. The app may skip signing in and go right to ZenKey authentication.
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