Device Permission Prompt API available for Office Add-ins on the web

1. Office Add-ins Device Permission Prompt API
   • Microsoft now requires Office Add-in developers to prompt users for permission to access their device capabilities for certain Office applications on the web.
2. Supported Office Applications
   • Web versions of Microsoft Word, Excel, Outlook, and PowerPoint running in Chromium-based browsers like Microsoft Edge or Google Chrome, as well as the new Outlook for Windows.
3. User's Device Capabilities
   • Includes camera, geolocation, and microphone access.
4. Implementation of Device Permission API
   • Developers can implement the Device Permission API in their add-ins to prompt users for permissions.
5. Impact
   • This change affects add-ins running in Office on the web on Chromium-based browsers; it does not impact add-ins running on other platforms or browsers.
6. Permission Dialog
   • The Device Permission API shows a dialog to the user with the add-in name, required device capabilities, and options to Allow, Allow once, or Deny permission.
7. Permission Storage
   • User permissions are stored in the cache to prevent repeated prompts from the same add-in. Changing permissions requires add-in reinstallation or clearing browser cache.
8. Outlook Add-ins
   • Event-based activation add-ins in Outlook do not inherit browser permissions and do not support the Device Permission API.
9. Further Information
   • More details on how users are prompted for permission can be found in the "View, manage, and install add-ins for Excel, PowerPoint, and Word" documentation.
10. Additional Resources
    • Office Dev Center, Privacy and security in Office Add-ins.

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