public static function get_identity( $user_id ) {
		$jetpack_lib = '/tracks/client.php';

		if ( class_exists( 'Jetpack' ) && Constants::is_defined( 'JETPACK__VERSION' ) ) {
			if ( version_compare( Constants::get_constant( 'JETPACK__VERSION' ), '7.5', '<' ) ) {
				if ( file_exists( jetpack_require_lib_dir() . $jetpack_lib ) ) {
					include_once jetpack_require_lib_dir() . $jetpack_lib;
					if ( function_exists( 'jetpack_tracks_get_identity' ) ) {
						return jetpack_tracks_get_identity( $user_id );
					}
				}
			} else {
				$tracking = new Automattic\Jetpack\Tracking();
				return $tracking->tracks_get_identity( $user_id );
			}
		}

		// Start with a previously set cookie.
		$anon_id = isset( $_COOKIE['tk_ai'] ) ? sanitize_text_field( wp_unslash( $_COOKIE['tk_ai'] ) ) : false;

		// If there is no cookie, apply a saved id.
		if ( ! $anon_id ) {
			$anon_id = get_user_meta( $user_id, '_woocommerce_tracks_anon_id', true );
		}

		// If an id is still not found, create one and save it.
		if ( ! $anon_id ) {
			$anon_id = self::get_anon_id();

			update_user_meta( $user_id, '_woocommerce_tracks_anon_id', $anon_id );
		}

		return array(
			'_ut' => 'anon',
			'_ui' => $anon_id,
		);
	}