Flash: Grant access to webcam programmatically / behind the scenes?

We're building a kiosk app that will have a fairly wide deployment. 开发者_运维百科The app is in Flash running in a browser and requires the use of the webcam. As it stands, each kiosk will show the usual Flash "do you want to allow the use of your camera/microphone" dialog, which I suppose a local admin could click through, choose "remember," etc.

Given that this is a kiosk app, where we have access to the machines themselves (or at least to people who do), is there a way to pre-seed the whitelist so the dialog does not appear?

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If you run a local application (not Flash) that can read/write the file system, then you can find the settings and change them. They're stored in a local shared object under the macromedia.com domain as well as the domain of the app to allow.

The exact location varies, but on my machine one example is here:

C:\Users\sam\AppData\Roaming\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\#ungrounded.net\settings.sol

This is the settings file for a tutorial here:

http://www.newgrounds.com/portal/view/326194

(the swf is actually hosted on undergrounded.net).

Here's an SOL viewer:

http://www.buraks.com/asv/tools/sve.html

And more information on editing SOL and software here:

http://en.wikipedia.org/wiki/Local_Shared_Object