The Citizen Media Law Project has a terrific explainer up today — “Documenting the 2009 Presidential Inauguration” — for people who are planning to be in Washington for the Obama inauguration. It explains:
During the Inauguration, heightened security measures will be in place across Washington, D.C., particularly in the areas where official events are taking place. These security measures, as well as tickets, permits, and credentialing requirements, will affect where you can go, what you can bring with you, and what you can do to document the Inauguration. Your location and what events are taking place there will influence what legal and other limitations you are subject to. The following information will help you understand and comply with security measures and other requirements while documenting the Inauguration.
If you’re going to be there with your camera, etc., this is invaluable information.