# Open Measurement 扩展

> 支持 Open Measurement (OM) 扩展，为应用内广告启用标准化可视性和验证。

Unity Ads 支持具有 Open Measurement 功能的广告素材。[IAB 的 Open Measurement SDK](https://iabtechlab.com/standards/open-measurement-sdk/) (OM SDK) 提供通用代码和文库，以方便第三方访问测量数据。集成 OM SDK 的站点和应用可以将测量信号发送到 Open Measurement Interface Definition (OMID) API。测量提供方可以放置收集这些信号的标签。为了能够接收和使用支持 OM 素材的广告请求，Unity 更新了其 OpenRTB 规范，以体现出广告请求和响应字段的有关变化。

| **父对象**                                                                          | **属性**   | **类型** | **示例**                | **描述**                                                                                                                                                                               |
| -------------------------------------------------------------------------------- | -------- | ------ | --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| [`bid.source`](/grow/programmatic/unity-exchange/bid-requests.md#source)         | `omidpn` | 字符串    | `"omidpn": "Unity3d"` | Open Measurement SDK 集成的标识符。与 OMID Partner 对象的 `name` 参数相同。                                                                                                                          |
| [`bid.source`](/grow/programmatic/unity-exchange/bid-requests.md#source)         | `omidpv` | 字符串    | `"omidpv": "1.3.0"`   | Open Measurement SDK 集成版本。与 OMID Partner 对象的 `versionString` 参数相同。                                                                                                                   |
| [`bid.imp.video`](/grow/programmatic/unity-exchange/bid-requests.md#video)       | `api`    | 整型数组   | `"api": [7]`          | 此广告展示支持的 API 框架。值为 `7` 表示支持 Open Measurement。                                                                                                                                        |
| [`response.seatbid.bid`](/grow/programmatic/unity-exchange/bid-responses.md#bid) | `api`    | 整型     | `"api":7`             | 此广告展示支持的 API 框架。值为 `7` 表示支持 Open Measurement (OM)。如需了解更多信息，请参阅 IAB Open Measurement SDK 手册的 **API 框架 (API Frameworks)** 部分。Unity 期望响应中每个出价都有 OMID-1 API 框架值 (7)，以便 SDK 能够处理 OM 广告素材。 |

如需了解更多信息，请参阅[告素材格式](/grow/programmatic/unity-exchange/creative-format-guidelines.md)。

*广告请求示例*

```json
{
    "id": "ABCDEfghijkLMNOPqrstUV",
    "imp": [{
        "id": "1",
        "video": {
            "mimes": ["video/mp4"],
            "minduration": 5,
            "maxduration": 30,
            "protocols": [2, 3, 5, 6],
            "w": 320,
            "h": 480,
            "linearity": 1,
            "sequence": 1,
            "battr": [1, 3, 5, 6, 8, 9, 13],
            "pos": 7,
            "api": [7]
        },
        "pmp": {},
        "displaymanager": "unity sdk",
        "displaymanagerver": "4000",
        "instl": 1,
        "tagid": "com.example.enterprise-vast",
        "secure": 1
    }],
    "app": {
        "id": "1",
        "publisher": {
            "id": "12345"
        }
    },
    "device": {
        "ua": "Mozilla/5.0 (iPhone; CPU iPhone OS 11_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E302",
        "geo": {
            "lat": 55.5555,
            "lon": 11.1111,
            "type": 2,
            "country": "DNK",
            "region": "84",
            "metro": "0",
            "city": "Copenhagen",
            "utcoffset": 60
        },
        "ip": "111.222.111.222",
        "devicetype": 4,
        "model": "iPhone10,1",
        "os": "ios",
        "osv": "11.3.1",
        "hwv": "iPhone10,1",
        "h": 647,
        "w": 375,
        "language": "en",
        "carrier": "Sprint",
        "connectiontype": 2,
        "ifa": "A123456B-7C89-01D2-3456-E7F890123GH4"
    },
    "at": 1,
    "tmax": 500,
    "source": {
        "pchain": "11111:12345",
        "omidpn": "Unity3d",
        "omidpv": "1.3.0"
    },
    "regs": {
        "ext": {}
    },
    "ext": {
        "placementType": "",
        "gameCategory": "Games",
        "subGameCategory": "Casual",
        "sessionDepth": 0
    }
}
```