A .NET MAUI Blazor application for scanning barcodes, MRZ (Machine Readable Zones), and documents across multiple platforms. Built with the Dynamsoft Capture Vision SDK.

• Load any image from the device file system
• Barcode — Detects all 1D/2D barcodes and draws a colour-coded overlay directly on the image
• MRZ — Reads passport, ID, and visa MRZ lines and parses structured fields (name, nationality, DOB, expiry, etc.)
• Document — Detects document boundaries, overlays the detected quad, and opens an interactive quad editor
• EXIF orientation is corrected automatically before processing — rotated camera photos are handled correctly

• Real-time scanning via the device camera
• Camera selection dropdown (defaults to the first available camera)
• Barcode — Continuous detection with live result display
• MRZ — Continuous detection with a restricted scan region
• Document — Detect and capture document boundaries; tap Capture to freeze the frame and open the editor

• Four draggable corner handles — touch/pointer friendly on both mobile and desktop
• Tap Rectify to apply an accurate perspective warp (homography) computed entirely in the browser via Canvas 2D — no server round-trip
• After rectification the corrected image is displayed full-width in the overlay
• Tap Edit to return to the quad editor and re-adjust the corners, then re-rectify
• Tap Save to export via the native OS share sheet (Android/iOS) or file dialog (Windows/macOS)

• .NET 8 SDK
• Visual Studio 2022 17.8+ with the .NET MAUI workload installed

1. Get a free trial license key from the Dynamsoft customer portal.

2. Launch the app. Enter your license key on the Activate SDK screen and tap Activate.

3. Choose File Reader or Camera Scanner.

1. Select the recognition mode: Barcode, MRZ, or Document.
2. Tap the file picker and select an image.
3. Results appear below the image. For Document mode the editor opens automatically — drag the corner handles to refine the boundary, then tap Rectify.

1. Grant camera permission when prompted.
2. Select the recognition mode.
3. For Document mode, tap Capture when the detected boundary looks correct.
4. Adjust the quad handles in the editor, tap Rectify, then Save to export.