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The camera is accessible in Live and App Live for mobile devices, but not accessible on desktop platforms (Windows, MacOS) on Live. However, accessing the camera would only show a black feed.
If your website has features, such as check scanning, profile image capture, and QR/Barcode scanning, you can use the Image Injection feature to test this on your website on select devices & browsers (Android devices + Chrome on Live & App Live and MacOS + Chrome on Live).