How to implement user authentication via device ID

Device ID authentication lets users start using the application on a mobile device without entering registration data. The first time a user logs in to the application using the device ID, a new account is created automatically, and the user doesn’t need to enter a username, email address, or other data.

Notice
The account created by the device ID allows using the application only on the current mobile device.Access to it will be lost after changing an iOS device or after uninstalling an application. To save progress in the application and use the account on other devices, the user can upgrade the account by linking a social network or by entering a username, email address, and password.

With the device ID, you can implement user authentication on one or more mobile devices in the background mode. To use this function, the user should link the device ID to an existing account.

The device ID is generated by the platform and is available to applications installed on the mobile device. The SDK obtains the ID value using the platform API and uses this value to perform various functions using the Xsolla API. The iOS device ID is passed in the UIDevice.identifierForVendor property.

The SDK implements methods for the functions listed below.

Authentication

SDK method nameDescription
authWithDeviceId
Authenticates the user to the application using the current device ID.

Account upgrade

SDK method nameDescription
addUsernameAndPassword
Adds a username, email address, and password, that can be used for authentication, to the current account.
Notice
The addUsernameAndPassword method can be used to upgrade an account created in any available way (e.g. by using a social network or an email address and password).

Device management

SDK method nameDescription
getUserDevices
Returns a list of devices linked to the current user account.
Links the specified device to the current user account.
Unlinks the specified device from the current user account.
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Last updated: October 8, 2021

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