;
+
+ /**
+ * Obtains the distributed virtual device ID (DVID).
+ *
+ * If the same OHOS account has logged in to multiple devices, these devices constitute a super device
+ * through the distributed networking. On the networked devices, you can call this method to obtain the DVIDs.
+ * The same application running on different devices obtains the same DVID, whereas different applications
+ * obtain different DVIDs.
+ *
+ *
+ * @since 7
+ * @devices phone, tablet, tv, wearable, car
+ * @return Returns the DVID if obtained; returns an empty string if no OHOS account has logged in.
+ * @permission ohos.permission.DISTRIBUTED_DATASYNC.
+ */
+ getDistributedVirtualDeviceId(callback: AsyncCallback): void;
+ getDistributedVirtualDeviceId(): Promise;
+
+ /**
+ * Obtains the profile photo of an OS account based on its local ID.
+ *
+ * @since 7
+ * @devices phone, tablet, tv, wearable, car
+ * @param localId Indicates the local ID of the OS account.
+ * @return Returns the profile photo if obtained;
+ * returns {@code null} if the profile photo fails to be obtained.
+ * @permission ohos.permission.MANAGE_LOCAL_ACCOUNTS.
+ * @systemapi Hide this for inner system use.
+ */
+ getOsAccountProfilePhoto(localId: number, callback: AsyncCallback): void;
+ getOsAccountProfilePhoto(localId: number): Promise;
+
+ /**
+ * Sets the profile photo for an OS account based on its local ID.
+ *
+ * @since 7
+ * @devices phone, tablet, tv, wearable, car
+ * @param localId Indicates the local ID of the OS account.
+ * @param photo Indicates the profile photo to set for the OS account.
+ * @return void.
+ * @permission ohos.permission.MANAGE_LOCAL_ACCOUNTS.
+ * @systemapi Hide this for inner system use.
+ */
+ setOsAccountProfilePhoto(localId: number, photo: string, callback: AsyncCallback): void;
+ setOsAccountProfilePhoto(localId: number, photo: string): Promise;
+
+ /**
+ * Obtain localId according to serial number
+ *
+ * @since 8
+ * @devices phone, tablet, tv, wearable, car
+ * @param serialNumber Indicates serial number.
+ * @return localId.
+ */
+ getOsAccountLocalIdBySerialNumber(serialNumber: number, callback: AsyncCallback): void;
+ getOsAccountLocalIdBySerialNumber(serialNumber: number): Promise;
+
+ /**
+ * Obtain serial number according to localId.
+ *
+ * @since 8
+ * @devices phone, tablet, tv, wearable, car
+ * @param localId Indicates the local ID of the OS account.
+ * @return serial number.
+ */
+ getSerialNumberByOsAccountLocalId(localId: number, callback: AsyncCallback): void;
+ getSerialNumberByOsAccountLocalId(localId: number): Promise;
+
+ /**
+ * Subscribes to the change events of OS accounts.
+ *
+ * When user change the account, the subscriber will receive a notification
+ * about the account change event.
+ *
+ * @since 7
+ * @devices phone, tablet, tv, wearable, car
+ * @param type Event type.
+ * @param name Indicates the name of subscriber.
+ * @return void.
+ * @permission ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS_EXTENSION
+ * @systemapi Hide this for inner system use.
+ */
+ on(type: 'activate' | 'activating', name: string, callback: Callback): void;
+
+ /**
+ * Unsubscribes from account events.
+ *
+ * @since 7
+ * @devices phone, tablet, tv, wearable, car
+ * @param type Event type.
+ * @param name Indicates the name of subscriber.
+ * @return void.
+ * @permission ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS_EXTENSION
+ * @systemapi Hide this for inner system use.
+ */
+ off(type: 'activate' | 'activating', name: string, callback?: Callback): void;
+ }
+
+ /**
+ * Provides information about OS accounts, including the local ID, local name, and type of an OS account.
+ * @name OsAccountInfo
+ * @since 7
+ * @sysCap SystemCapability.Account.OsAccount
+ * @devices phone, tablet, tv, wearable, car
+ */
+ interface OsAccountInfo {
+ /**
+ * The local ID of an OS account.
+ * @since 7
+ */
+ localId: number;
+
+ /**
+ * The local name of an OS account.
+ * @since 7
+ */
+ localName: string;
+
+ /**
+ * Include: ADMIN, Normal, GUEST.
+ * @since 7
+ */
+ type: OsAccountType;
+
+ /**
+ * Account constraints information.
+ * @since 7
+ */
+ constraints: Array;
+
+ /**
+ * The account is verified or not.
+ * @since 8
+ */
+ isVerified: boolean;
+
+ /**
+ * OS account photo.
+ * @since 8
+ */
+ photo: string;
+
+ /**
+ * Os account create time.
+ * @since 8
+ */
+ createTime: number;
+
+ /**
+ * The last time to log in.
+ * @since 8
+ */
+ lastLoginTime: number;
+
+ /**
+ * Os account serial number.
+ * @since 8
+ */
+ serialNumber: number;
+
+ /**
+ * Os account is actived or not.
+ * @since 8
+ */
+ isActived: boolean;
+
+ /**
+ * Os account create completed or not.
+ * @since 8
+ */
+ isCreateCompleted: boolean;
+
+ /**
+ * Distributed account info.
+ * @since 7
+ */
+ distributedInfo: distributedAccount.DistributedInfo;
+
+ /**
+ * Domain account info.
+ * @since 8
+ */
+ domainInfo: DomainAccountInfo;
+ }
+
+ interface DomainAccountInfo {
+ /**
+ * The domain name
+ * @since 8
+ */
+ domain: string;
+
+ /**
+ * The account name in the domain
+ * @since 8
+ */
+ accountName: string;
+ }
+
+ /**
+ * Enumerates OS account types.
+ * @name OsAccountType
+ * @since 7
+ * @sysCap SystemCapability.Account.OsAccount
+ * @devices phone, tablet, tv, wearable, car
+ */
+ enum OsAccountType {
+ /**
+ * Indicates the administrator account, which has the permission to manage other OS accounts.
+ */
+ ADMIN = 0,
+
+ /**
+ * Indicates a normal account, which has access to common functions of OS accounts.
+ */
+ NORMAL,
+
+ /**
+ * Indicates a guest account, which is used to temporarily access the device and may be deleted at any time.
+ */
+ GUEST
+ }
+}
+
+export default osAccount;
\ No newline at end of file