# About this Release

EI Tunnel Manager 2.3 includes updates to multiple applications and adds a new feature.

## New Features

No-read feedback results are now available on EI Tunnel Manager devices. This feature provides the following functions:

- The Result Browser page highlights images with barcodes that were not successfully decoded.

- The page provides detailed information about each no-read, including the reason for the failure.

- The page also offers new customization options to add, remove, or rearrange elements on the page.

## Enhancements and Changes

EI Tunnel Manager 2.3 includes the following enhancements and changes:

- Connections on the Other Devices page now automatically close after 30 minutes to improve security. When upgrading to this version, existing connections in the Other Devices page are closed.

- You can now snooze notifications in the Notification Center for ten minutes at a time. This feature is helpful during system commissioning.

- EI Tunnel Manager now supports more Modular Vision Tunnel variants for 3D-calibrated features, including Barcode Assignment and Image Stitching. Additional licenses are required. Image Stitching is only available on select hardware.