What's new in v4.1: • TrueDepth support for eligible iPhones (iPhone X and later), pre-scan user login, and a timed app lockout to protect patient data. • Introduced a landing experience: a new pre-login welcome screen highlighting BackSCNR's capabilities, and a streamlined post-login home with quick actions for starting a scan, viewing patients, and opening the user manual. • Guided scan onboarding: Step-by-step Patient Preparation and Scanning Instructions screens walk the operator through positioning, environment, and capture technique before each scan. The TrueDepth sensor now pre-warms while the operator reads the checklist, so scanning starts instantly when they're ready. • In-app user manual: The BackSCNR provider documentation is now accessible directly from the home screen. • Refreshed visual design: new Oswald and Roboto typography, refined light-mode styling, redesigned iPad layouts, and updated iconography across the app. • Scanning view improvements: Added app-wide navigation, repositioned and enlarged the reset button, and updated overlay typography for better readability during capture. • Sensor handling: Clearer messaging when a compatible depth sensor isn't connected or available. • Built on Structure SDK 3.7. Release notes: https://support.structure.io/article/417-structure-sdk-ios-release-notes#Structure-SDK-360-for-iOS-gue_6 • Includes app banner surpression from in-app browser

As per Structure's webpage (https://support.structure.io/article/417-structure-sdk-ios-release-notes#Structure-SDK-340-for-iOS-CCT_r) New Features: - Added Reboot Sensor functionality for Structure Sensor 3 - Structure/STCaptureSession/rebootSensor - Added Support for iPad Air 13-inch 7th Gen - Added Signature to SDK Framework for compatibility and security. Fixes and Improvements: - Fixed an issue where using the Structure SDK with a simulator would cause a crash. - Fixed an issue where available firmware update messages were not displayed. - Fixed a crash where Structure Sensor 3 would disconnect between two scans in rapid succession. - Fixed various crashes when using Structure Sensor Mark II or Structure Sensor Pro. - Improved Initialization times for Structure Sensor 1. - Fixed several issues relating to presets where preset values were not overwritten correctly. Issues: - Freezes - In rare occasions the app may freeze when switching Tracker settings from ‘Depth Only’ to ‘Depth + Color’ - Streaming - Calibrator or Structure App may not stream depth data when launched, this can usually be corrected by: - Restarting the app - Switching between streaming modes. - Jittering - In some cases the video feed can ‘Jitter’, where frames per second (fps) can drop dramatically.

Fixed tracking failures when using TrueDepth in some rare scenarios.

Before using the new features, ensure the following: 1. Your Structure Sensor 3 firmware is updated to version 1.2 - instructions here [1] 2. Latest version of Calibrator is installed on your host device [2] 3. New calibration is completed with the latest (updated) version of Calibrator [3] New Features: - Ultra-Close: allows scans up to 25 cm of the target. - Room Scanning (Beta): for scanning large indoor spaces - Dark Object Scanning (Beta) - for scanning black or dark colored objects. - Simplified - for quickly and easily tracking objects within a wide range of sizes. Improvements: - Significantly improved initialization time of Structure Sensor 3 - Significantly improved Structure Sensor 3 preset switch time. - Significantly improved TrueDepth accuracy and performance on all iPads - Improved color registration on ST03 sensors - Significantly improved connectivity with Structure Sensor 3 - Fixed IR LED control for original Structure Sensor [1] https://support.structure.io/article/410-getting-started---updating-your-sensors-firmware [2] https://apps.apple.com/us/app/structure-sensor-calibrator/id914275485 [3] https://support.structure.io/article/382-getting-started-how-to-use-the-calibrator-app

**IMPORTANT** Please download the Structure app (https://apps.apple.com/us/app/structure/id570447097) to receive sensor firmware updates. Official Structure release notes: NEW: - New function: Reboot Sensor - STCaptureSession/rebootSensor - Outdoor Preset support for Structure Sensor 3: STCaptureSessionPreset/STCaptureSessionPresetOutdoor Improvements: - Significantly decreased initialization times for Structure Sensor 3 - Significantly decreased preset switching times for Structure Sensor 3. - Improved auto-exposure for Structure Sensor 3. (NOTE: Requires firmware 1.1) Updates: Changed type of kSTCaptureSessionPropertySensorIRProjectorModeKey sensor property from a simple boolean to: STCaptureSessionSensorProjectorMode enum. This is in preparation for the Fast Projector Mode Structure Sensor 3. Fixed: Various crashes with all Structure SensorsStructure Release Notes: See https://support.structure.io/article/417-structure-sdk-ios-release-notes#Structure-SDK-320-for-iOS-ztEu- for more information.

Performance Improvements: - Improved Stability on launch by optimizing the initialization process for Structure Sensor 3. - Bugs Fixed Fixed an issue where a Structure Sensor (Mark II) or Structure Sensor Pro could cause a crash when capture session was de-allocated. Fixed an issue where HDR settings were not fully respected by the Structure Sensor 3. Features Supported: - Scan with the Structure Sensor 3, as well as Structure Sensor 1 and Structure Sensor 2, with no need for separate compatibility modes. Please note, if you implemented the toggle available in Structure SDK 3.1 beta, it will still work. - iPhone 16 support - Calibrate Structure Sensor 3 - Lightning iPad support for Structure Sensor 3

**IMPORTANT** If you are using the Structure Sensor 1 (ST01), please follow the following instructions: 1. Install the app 2. Go to your iPad/iPhone Settings 3. Navigate to the BackSCNR app settings and open the settings 4. At the very bottom of the page, turn on "Enable Original Structure Sensor Compatibility Mode" 5. Go to the BackSCNR app and take your scan For users on the Sensor 2 or 3: Ignore the instructions above and go straight to the BackSCNR app. If prompted with "Please connect the Original Structure sensor", follow the steps above but during Step 4, turn OFF the "Enable Original Structure Sensor Compatibility Mode" toggle, then restart the BackSCNR app. Version 3.0.2 supports the following sensors: - Structure Sensor 1 (ST01) - Structure Sensor 2 (Mark 2) - Structure Sensor 3 In case of any issues, please email info@backscnr.com

This version includes: - Support for Structure Sensor 3 (built using the new Structure SDK) - Back compatibility for Mark 2 sensor (Sensor 2) This is a link to a list of known issues associated with the new sensor and SDK: https://support.structure.io/article/459-structure-sensor-3-known-issues-tracker-bugs-stability-crashes Please contact info@backscnr.com in case of any issues.

Uploading 3D model files to backscnr.com as .obj zip files instead of .stl files. This is to preserve color in the model.