This site describes FastPass tickets used at disneyland with many frequently asked questions _http://www.mouseplanet.com/al/docs/fast.htm_ (http://www.mouseplanet.com/al/docs/fast.htm) and a Google search for "timed tickets" will result in many hits for many institutions using this device Washington Monument Lewis and Clark and many other non-profit museums etc. I am sure that direct contact with them would provide good infomation. Barbara Hass, retired librarian ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).