[dagingaa]

Which browser and OS are you on? Depending on that, it should be somewhere near the top. Firefox has a tendency to close the accept dialogue if you change tabs, and you can retrieve it by clicking the camera icon in the address bar. Unfortunately there is no way for us to improve this UX from our end, but we are working on more informative "waiting" pages.

[huhtenberg]

Same here. Firefox 26 on Windows 7. No popups, no messages, no camera icon, no clues whatsoever as to how to "grant camera an access to use appear.in".

[windsurfer]

I'm getting the same thing. Firefox on Ubuntu

[dagingaa]

This is probably related to a known bug with Firefox 26 on Ubuntu 13.10 (and apparently other, similar Linux setups). Track progress here: https://bugzilla.mozilla.org/show_bug.cgi?id=750011