diff --git a/unity-client/Assets/Scripts/UI/ScannerController.cs b/unity-client/Assets/Scripts/UI/ScannerController.cs
new file mode 100644
index 0000000..3f6b748
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+++ b/unity-client/Assets/Scripts/UI/ScannerController.cs
@@ -0,0 +1,228 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+using TMPro;
+using Newtonsoft.Json;
+using CommanderAILab.Models;
+using CommanderAILab.Services;
+
+namespace CommanderAILab.UI
+{
+  /// <summary>
+  /// Scanner scene — live camera feed, capture frame, POST /api/scanner/scan,
+  /// display result card overlay, add to collection or deck.
+  /// </summary>
+  public class ScannerController : MonoBehaviour
+  {
+    [Header("Navigation")]
+    [SerializeField] private Button backButton;
+
+    [Header("Camera Feed")]
+    [SerializeField] private RawImage   cameraFeedImage;
+    [SerializeField] private Button     captureButton;
+    [SerializeField] private Button     toggleCameraButton;
+    [SerializeField] private TMP_Text   cameraStatusText;
+    [SerializeField] private GameObject scanOverlay;     // animated scan line
+
+    [Header("Result Panel")]
+    [SerializeField] private GameObject resultPanel;
+    [SerializeField] private Image      resultCardImage;
+    [SerializeField] private TMP_Text   resultCardName;
+    [SerializeField] private TMP_Text   resultManaCost;
+    [SerializeField] private TMP_Text   resultType;
+    [SerializeField] private TMP_Text   resultSet;
+    [SerializeField] private TMP_Text   resultOracleText;
+    [SerializeField] private TMP_Text   resultConfidence;
+    [SerializeField] private Button     addToCollectionButton;
+    [SerializeField] private Button     addToDeckButton;
+    [SerializeField] private Button     scanAgainButton;
+
+    [Header("Scan History")]
+    [SerializeField] private Transform  historyParent;
+    [SerializeField] private GameObject historyRowPrefab;
+
+    [Header("Error")]
+    [SerializeField] private GameObject errorPanel;
+    [SerializeField] private TMP_Text   errorText;
+    [SerializeField] private Button     retryButton;
+
+    private WebCamTexture  _webcam;
+    private int            _cameraIndex = 0;
+    private CardModel      _scannedCard;
+    private bool           _isScanning  = false;
+    private readonly List<CardModel>    _history     = new();
+    private readonly List<GameObject>   _historyRows = new();
+
+    private void Start()
+    {
+      backButton.onClick.AddListener(OnBack);
+      captureButton.onClick.AddListener(OnCapture);
+      toggleCameraButton.onClick.AddListener(ToggleCamera);
+      addToCollectionButton.onClick.AddListener(OnAddToCollection);
+      addToDeckButton.onClick.AddListener(OnAddToDeck);
+      scanAgainButton.onClick.AddListener(OnScanAgain);
+      retryButton.onClick.AddListener(OnCapture);
+
+      resultPanel.SetActive(false);
+      errorPanel.SetActive(false);
+      scanOverlay.SetActive(false);
+
+      StartCamera(_cameraIndex);
+    }
+
+    private void OnDestroy()
+    {
+      if (_webcam != null && _webcam.isPlaying) _webcam.Stop();
+    }
+
+    // ── Camera ────────────────────────────────────────────────────────
+    private void StartCamera(int idx)
+    {
+      if (_webcam != null && _webcam.isPlaying) _webcam.Stop();
+
+      var devices = WebCamTexture.devices;
+      if (devices.Length == 0)
+      {
+        cameraStatusText.text = "No camera found";
+        captureButton.interactable = false;
+        return;
+      }
+
+      idx = Mathf.Clamp(idx, 0, devices.Length - 1);
+      _webcam = new WebCamTexture(devices[idx].name, 1280, 720, 30);
+      _webcam.Play();
+      cameraFeedImage.texture = _webcam;
+      cameraStatusText.text = $"Camera: {devices[idx].name}";
+      captureButton.interactable = true;
+    }
+
+    private void ToggleCamera()
+    {
+      var devices = WebCamTexture.devices;
+      if (devices.Length < 2) return;
+      _cameraIndex = (_cameraIndex + 1) % devices.Length;
+      StartCamera(_cameraIndex);
+    }
+
+    // ── Capture & Scan ────────────────────────────────────────────────
+    private void OnCapture()
+    {
+      if (_isScanning || _webcam == null || !_webcam.isPlaying) return;
+      _isScanning = true;
+      errorPanel.SetActive(false);
+      resultPanel.SetActive(false);
+      scanOverlay.SetActive(true);
+      captureButton.interactable = false;
+
+      // Grab frame and encode to JPEG
+      var tex = new Texture2D(_webcam.width, _webcam.height);
+      tex.SetPixels(_webcam.GetPixels());
+      tex.Apply();
+      byte[] jpegBytes = tex.EncodeToJPG(85);
+      Destroy(tex);
+
+      ApiClient.Instance.ScanCard(jpegBytes,
+        json =>
+        {
+          scanOverlay.SetActive(false);
+          _isScanning = false;
+          captureButton.interactable = true;
+          try
+          {
+            var result = JsonConvert.DeserializeObject<ScanResult>(json);
+            if (result?.card != null) ShowResult(result.card, result.confidence);
+            else ShowError("Card not recognized. Try again.");
+          }
+          catch (Exception e) { ShowError($"Parse error: {e.Message}"); }
+        },
+        err =>
+        {
+          scanOverlay.SetActive(false);
+          _isScanning = false;
+          captureButton.interactable = true;
+          ShowError($"Scan failed:\n{err}");
+        });
+    }
+
+    // ── Result ────────────────────────────────────────────────────────
+    private void ShowResult(CardModel card, float confidence)
+    {
+      _scannedCard = card;
+      resultPanel.SetActive(true);
+
+      resultCardName.text   = card.name;
+      resultManaCost.text   = card.manaCost;
+      resultType.text       = card.typeLine;
+      resultSet.text        = card.set;
+      resultOracleText.text = card.oracleText;
+      resultConfidence.text = $"Confidence: {confidence:P0}";
+
+      if (!string.IsNullOrEmpty(card.imageUrl))
+        ImageCache.Instance.GetSprite(card.imageUrl, s =>
+        {
+          if (resultCardImage != null) resultCardImage.sprite = s;
+        });
+
+      AddToHistory(card);
+    }
+
+    private void AddToHistory(CardModel card)
+    {
+      _history.Add(card);
+      var row = Instantiate(historyRowPrefab, historyParent);
+      _historyRows.Add(row);
+      var lbl = row.GetComponentInChildren<TMP_Text>();
+      if (lbl) lbl.text = card.name;
+      var btn = row.GetComponentInChildren<Button>();
+      var captured = card;
+      if (btn) btn.onClick.AddListener(() => ShowResult(captured, 1f));
+    }
+
+    private void OnScanAgain()
+    {
+      resultPanel.SetActive(false);
+      _scannedCard = null;
+    }
+
+    // ── Add to Collection / Deck ──────────────────────────────────────
+    private void OnAddToCollection()
+    {
+      if (_scannedCard == null) return;
+      // POST to collection endpoint (add quantity 1)
+      var body = JsonConvert.SerializeObject(new { card_id = _scannedCard.id, qty = 1 });
+      StartCoroutine(ApiClient.Instance.PostRaw("/api/collection/add", body,
+        _ => cameraStatusText.text = $"Added {_scannedCard.name} to collection",
+        err => ShowError($"Add to collection failed:\n{err}")));
+    }
+
+    private void OnAddToDeck()
+    {
+      if (_scannedCard == null) return;
+      PlayerPrefs.SetString("PendingAddCard", JsonConvert.SerializeObject(_scannedCard));
+      PlayerPrefs.Save();
+      SceneManager.LoadScene("DeckBuilder");
+    }
+
+    private void OnBack()
+    {
+      if (_webcam != null && _webcam.isPlaying) _webcam.Stop();
+      SceneManager.LoadScene("MainMenu");
+    }
+
+    private void ShowError(string msg)
+    {
+      errorText.text = msg;
+      errorPanel.SetActive(true);
+      Debug.LogWarning($"[ScannerController] {msg}");
+    }
+
+    [Serializable] private class ScanResult
+    {
+      public CardModel card;
+      public float     confidence;
+    }
+  }
+}