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Chapter 12. Security > Privacy Settings

Privacy Settings

Flash can access media streams available to the local (client) computer, including data from any connected microphone and video camera. Flash can also store persistent information (files or other preference data) [Hack #44] locally via the SharedObject class (so-called local shared objects or LSOs). For details on the SharedObject class, see pages 760-768 in ActionScript for Flash MX: The Definitive Guide, by Colin Moock (O'Reilly), and Recipe 16.4—"Saving a Local Shared Object"—in the ActionScript Cookbook, by Joey Lott (O'Reilly).

The ability for a site to receive input from a microphone or camera attached to your computer or store information on your hard drive raises privacy and security issues. Therefore, the Flash Player must have the user's permission before it allows the SWF to do anything that may infringe on the user's privacy. Such permission is sought on a per-domain basis (the Flash Player 7 System.exactSettings property specifies whether to use superdomain or exact-domain matching rules when accessing local settings) via the Macromedia Flash Player Settings pop-up window shown in Figure 12-1.


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