diff --git a/__pycache__/auth.cpython-313.pyc b/__pycache__/auth.cpython-313.pyc
index 6a1d985..dd75ae9 100644
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diff --git a/api/__pycache__/contents.cpython-313.pyc b/api/__pycache__/contents.cpython-313.pyc
index a810951..5420930 100644
Binary files a/api/__pycache__/contents.cpython-313.pyc and b/api/__pycache__/contents.cpython-313.pyc differ
diff --git a/api/contents.py b/api/contents.py
index 5fa828b..4a3e7f2 100644
--- a/api/contents.py
+++ b/api/contents.py
@@ -496,6 +496,89 @@ async def get_latest_content_binary(
             detail=f"生成二进制数据失败: {str(e)}"
         )
 
+@router.get("/public/devices/{device_id}/content/latest/binary")
+async def get_latest_content_binary_public(
+    device_id: str,
+    invert: bool = Query(False, description="是否反转颜色"),
+    rotate: bool = Query(False, description="是否旋转90度"),
+    dither: bool = Query(True, description="是否使用抖动算法"),
+    db: Session = Depends(get_db)
+):
+    """
+    获取设备最新活跃内容的二进制数据，适用于墨水屏显示（无需鉴权）
+    """
+    # 检查设备是否存在
+    device = db.query(DeviceModel).filter(DeviceModel.device_id == device_id).first()
+    if not device:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="设备不存在"
+        )
+    
+    # 获取最新的活跃内容
+    content = db.query(ContentModel).filter(
+        ContentModel.device_id == device_id,
+        ContentModel.is_active == True
+    ).order_by(ContentModel.version.desc()).first()
+    
+    if not content:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="设备没有活跃内容"
+        )
+    
+    if not content.image_path:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="内容没有关联的图片"
+        )
+    
+    try:
+        # 获取完整的图片路径
+        # 检查image_path是否已经包含static目录
+        if content.image_path.startswith('static/'):
+            # 已经包含static目录，直接使用
+            image_path = content.image_path
+        elif content.image_path.startswith('/'):
+            # 以/开头的完整路径，去掉开头的斜杠
+            image_path = content.image_path[1:]
+        else:
+            # 相对路径，添加static_dir前缀
+            image_path = os.path.join(settings.static_dir, content.image_path)
+        
+        # 确保图片文件存在
+        if not os.path.exists(image_path):
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail="图片文件不存在"
+            )
+        
+        # 转换为二进制数据
+        binary_data = convert_to_binary_data(
+            image_path,
+            width=settings.ink_width,
+            height=settings.ink_height,
+            invert=invert,
+            rotate=rotate,
+            dither=dither
+        )
+        
+        # 返回二进制数据
+        return Response(
+            content=binary_data,
+            media_type="application/octet-stream",
+            headers={
+                "Content-Disposition": f"attachment; filename={device_id}_latest.bin",
+                "Content-Length": str(len(binary_data))
+            }
+        )
+        
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"生成二进制数据失败: {str(e)}"
+        )
+
 @router.get("/devices/{device_id}/content/{version}/binary", dependencies=[Depends(get_api_key)])
 async def get_content_binary(
     device_id: str,
diff --git a/auth.py b/auth.py
index fe8bf4d..fb23e67 100644
--- a/auth.py
+++ b/auth.py
@@ -66,7 +66,17 @@ class APIKeyMiddleware(BaseHTTPMiddleware):
         """
         判断是否跳过鉴权的路径
         """
-        # 所有API路径都需要鉴权，不跳过
+        # 公共API路径不需要鉴权
+        public_api_paths = [
+            "/api/contents/public/",
+        ]
+        
+        # 检查是否是公共API路径
+        for public_path in public_api_paths:
+            if path.startswith(public_path):
+                return True
+        
+        # 所有其他API路径都需要鉴权，不跳过
         # 如果路径以/api开头，则不跳过（需要鉴权）
         if path.startswith("/api"):
             return False
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diff --git a/tool/__pycache__/image_converter.cpython-313.pyc b/tool/__pycache__/image_converter.cpython-313.pyc
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