There is no need to scan to backfill when using a FreeStyle Libre 3 or FreeStyle Libre 3 Plus sensor. The Libre app* will automatically backfill data when you come back into range with the app and your FreeStyle Libre 3/FreeStyle Libre 3 Plus sensor.
*The FreeStyle Libre systems apps are only compatible with certain mobile devices and operating systems. Please check the Support section of our website for more information about device compatibility before using the apps. Use of the FreeStyle Libre systems apps may require registration with LibreView.