Overview of shared device mode

Shared Device Mode (SDM) is a Microsoft Entra ID feature that enables organizations to configure an iOS, iPadOS, or Android device for shared use among multiple employees, a common practice in frontline worker environments. With SDM, employees sign in once to access their data across all supported applications, without accessing other employees’ data. When employees sign out after completing their shift or task, they're automatically signed out of the device and all supported applications, making the device ready for the next user.

Why Shared Device Mode?

To allow employees to use an organization's apps across shared devices, developers should facilitate a streamlined and secure user experience. Employees should be able to pick a device from the shared pool and sign in with a single gesture, making the device "theirs" during their shift. At the end of their shift, employees can perform another gesture to globally sign out of the device before returning it to the shared device pool. Enabling Shared Device Mode provides several benefits, including:

• Single sign-on: Allow users to sign into one of the apps that support shared device mode and gain seamless authentication across all other SDM supported apps without having to reenter their credentials. Exempt users from First Run Experience (FRE) screens on shared devices.
• Single sign out: Enable users to sign out of the device without needing to sign out individually from each SDM supported application. Signing out assures users that their data won’t be shown to subsequent device users, provided apps ensure cleaning up of any cached user data.
• Security via Conditional Access policies support: Provide admins the ability to target specific conditional access policies on shared devices, ensuring that employees have access to company data only when their shared device meets internal compliance standards.

Supported and unsupported scenarios

Shared Device Mode feature supports following scenarios:

• A user signs in to a Shared Device Mode supported application (Line of business app, third-party launcher app, or Microsoft app) on an Android or iOS/iPadOS device using Microsoft Entra ID credentials and is automatically signed-on to all Shared Device Mode supported apps on the device.
• A User signs out of a Shared Device Mode supported application (Line of business, third-party launcher, or Microsoft app) on an Android or iOS/iPadOS device and is logged out of all SDM supported apps on the device.
• If an admin sets up a Conditional Access policy with the grant that requires devices to be enrolled in mobile device management (MDM) and compliant, the user can only sign in to an SDM-supported application if the device is compliant.

Roles of admins and developers in implementing Shared Device Mode

To take advantage of the shared device mode feature, cloud device admins and application developers work together:

Device administrators prepare the devices to be shared by setting up the devices in shared device mode manually or via a mobile device management (MDM) provider like Microsoft Intune. The preferred option is using an MDM as it allows the device setup in shared device mode at scale via zero-touch provisioning. The MDM is configured to push the Microsoft Authenticator app to the device with shared device mode turned on. On iOS devices, MDM also enables the Microsoft Enterprise SSO plug-in that is required for shared device mode.

The following guides provide more details on how to set up devices in shared device mode via Intune:

• Set up Intune enrollment of Android Enterprise dedicated devices
• Set up enrollment for iOS and iPadOS devices in shared device mode.

You can also set up devices in shared device mode using a supported third-party MDM. For a list of third-party MDMs that support shared device mode on Android, refer to Third-party MDMs that support shared device mode.

Manual setup is a useful tool for pilot programs and small-scale deployments. It requires the Cloud Device Administrator access and needs to be done on each device.

Application developers add shared device mode support to single account public client application using the Microsoft Authentication Library (MSAL). MSAL allows the apps to modify their behavior based on the signals on the state of the device and user on the device. For example, the application checks the state of the user on the device every time the application is used and clears the previous user's data if the user has changed. On a user change, the application should ensure both the previous user's data is cleared and that any cached data being displayed in the application is removed.

Application developers can also integrate with the Intune App SDK to support all data loss prevention scenarios, which is highly recommended. The Intune App SDK enables developers to support Intune App Protection Policies in their applications. Microsoft recommends integrating with Intune's selective wipe capabilities and deregistering the user on iOS during sign out.

Supporting shared device mode should be considered a feature upgrade for the application and can help increase its adoption in environments where the same device is shared among multiple users.

Related content

Microsoft Entra ID supports shared device mode in iOS and Android platforms. For more information, see:

• Supporting shared device mode for iOS
• Supporting shared device mode for Android