# fiftyone.core.uid Utilities for usage analytics. Copyright 2017-2026, Voxel51, Inc.
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**Functions:** | [`get_user_id`](#fiftyone.core.uid.get_user_id)() | Gets the UUID of the current user. | |-----------------------------------------------------|--------------------------------------| ### fiftyone.core.uid.get_user_id() Gets the UUID of the current user. The UUID is persisted in the FiftyOne config directory so that it is stable across sessions. It is only used for anonymous usage analytics, so if the config directory cannot be created or written to (e.g. a read-only filesystem, or a container where `~` resolves to a directory we don’t own), a fresh ephemeral UUID is returned rather than raising an error. * **Returns:** a UUID string