[null,null,["最后更新时间 (UTC):2025-07-29。"],[[["\u003cp\u003eThe Device Access program launched on September 22, 2020, enabling developers to build applications that interact with Nest devices.\u003c/p\u003e\n"],["\u003cp\u003eSupport for various Nest devices, including cameras, doorbells, and thermostats, has been added over time, with specific device guides available.\u003c/p\u003e\n"],["\u003cp\u003eDevice Access provides features like WebRTC support for legacy cameras, event threads for select events, and a Device Access web application sample.\u003c/p\u003e\n"],["\u003cp\u003eResources such as client libraries, error documentation, authorization guides, and codelabs are available to aid developers in building and integrating their applications.\u003c/p\u003e\n"],["\u003cp\u003eGoogle has provided guidance on event management, service accounts, and supported devices, along with a Partner Connections Manager (PCM) Error Reference.\u003c/p\u003e\n"]]],[],null,["# Release Notes\n\nJanuary 23, 2025\n----------------\n\n#### Self-hosted Pub/Sub topics for events\n\nGoogle-hosted Pub/Sub topics for events are no longer available for new\nprojects. Going forward, developers must create a Pub/Sub topic for events in\ntheir own Google Cloud projects. See\n[Subscribe to Events](/nest/device-access/subscribe-to-events#enable_events) for\nmore information.\n\nAugust 24, 2023\n---------------\n\n#### Legacy camera migration\n\nSome legacy cameras now support WebRTC. See the\n[Migrate devices to the Google Home\napp](https://support.google.com/googlenest/answer/13038234)\nsupport article for more information.\n\nFebruary 15, 2023\n-----------------\n\n#### Support added for the Google Nest Doorbell (wired)\n\nSee the [Google Nest Doorbell (wired)](/nest/device-access/api/doorbell-wired)\nguide for more information.\n\nJanuary 13, 2022\n----------------\n\n#### Device Access web application sample added\n\nA [Device Access web application sample app](/nest/device-access/samples/web-app)\nis now available. Use the provided directions to deploy a functioning web\napplication to control Nest cameras, doorbells, and thermostats.\n\nNovember 18, 2021\n-----------------\n\n#### Support added for the Nest Cam with floodlight and Nest Cam (indoor, wired)\n\nSee the [Nest Cam with floodlight](/nest/device-access/api/camera-floodlight)\nand [Nest Cam (indoor, wired)](/nest/device-access/api/camera-wired) device\nguides for more information.\n\nSeptember 21, 2021\n------------------\n\n#### Support added for the Nest Cam (outdoor or indoor, battery) and Nest Doorbell (battery)\n\nSee the [Nest Cam (outdoor or indoor, battery)](/nest/device-access/api/camera-battery)\nand [Nest Doorbell (battery)](/nest/device-access/api/doorbell-battery) device\nguides for more information.\n\nA new trait, [CameraClipPreview](/nest/device-access/traits/device/camera-clip-preview), has been\nadded for Nest Doorbell (battery). This trait supports the download of a\nclip preview, a 10 frame video file in MP4 format.\n\n#### Event threads\n\nSupport for event threads has been added to select events in the API. See\n[Updateable Notifications](/nest/device-access/api/events#updateable-notifications)\nfor more information.\n\n\n| Type | Element | Description |\n|-------|--------------------------------------------------------------------------------------------------|-------------------------------------------|\n| Event | [Motion](/nest/device-access/traits/device/camera-motion#motion) event of the CameraMotion trait | Motion has been detected by the camera. |\n| Event | [Person](/nest/device-access/traits/device/camera-person#person) event of the CameraPerson trait | A person has been detected by the camera. |\n| Event | [Chime](/nest/device-access/traits/device/doorbell-chime#chime) event of the DoorbellChime trait | The doorbell has been pressed. |\n\n\u003cbr /\u003e\n\n#### Supported devices page\n\nWe've published a new page that lists [supported\ndevices](/nest/device-access/supported-devices) by model and details the difference\nin API functionality between each as needed.\n\nJuly 2, 2021\n------------\n\n#### Error documentation updated\n\nAll error documentation has been moved out of the Reference tab and into an\n\"Errors and Troubleshooting\" section of the API Guides tab, and a new\n[Authorization Errors](/nest/device-access/reference/errors/authorization) page has\nbeen added.\n\n#### Authorization quick reference\n\nA new authorization quick reference widget, which provides a condensed version\nof the full authorization process, has been added to the [Quick Start\nguide](/nest/device-access/authorize#quick_reference) and the new Authorization\nErrors page.\n\nJanuary 20, 2021\n----------------\n\n#### Resource event payloads updated\n\nA new field, `resourceGroup`, has been added to all resource event payloads. See\n[Resource events](/nest/device-access/api/events#resource-events) for more\ninformation.\n\n#### Unverified apps\n\nWe've published information on unverified apps on the\n[Authorization](/nest/device-access/api/authorization#unverified_apps) and [Google\nCloud Platform Setup](/nest/device-access/project/gcp#unverified_apps) pages.\n\nNovember 19, 2020\n-----------------\n\n#### Building a Device Access Web Application Codelab\n\nWe've published a new Codelab, [Building a Device Access Web\nApplication](/nest/device-access/codelabs/web-app). In this Codelab, you'll learn how\nDevice Access works and build a web application that handles authentication\nand SDM API calls for a Nest Thermostat.\n\nOctober 29, 2020\n----------------\n\n#### Client libraries\n\nWe've added Google API client libraries for the SDM API. See\n[Client Libraries](/nest/device-access/api/libraries) for a list of supported\nlanguages you can use to provide better language integration and improved\nsecurity for your Device Access projects.\n\n#### Guidance on event management and service accounts\n\nWe've added guidance on Pub/Sub event management and the\nrelated use of service accounts:\n\n- Quick Start guide --- [Manage\n messages](/nest/device-access/subscribe-to-events#manage_messages), [Manage\n subscriptions](/nest/device-access/subscribe-to-events#manage_subscriptions)\n- Events guide --- [Service\n accounts](/nest/device-access/api/events#service_accounts)\n\nOctober 8, 2020\n---------------\n\n#### Partner Connections Manager (PCM) Error Reference\n\nA reference page for errors encountered during account linking has been\npublished. See [Partner Connections Manager (PCM) Error\nReference](/nest/device-access/reference/errors/pcm) for more information.\n\nSeptember 22, 2020\n------------------\n\n#### Device Access launched!\n\nThe Device Access program is now live. See\n[Registration](/nest/device-access/registration) for more information on how to get\nstarted."]]