Button for Mac

Create a Logout button on iMac - this logout button works in the same manner as Mac's logout button. Following are the functions of the button: 1. The logout button should clear all files initiated or downloaded by the user. 2. The logout button should clear all browsing history of the user, 3. The logout button should uninstall any programs installed by the user. This button should serve all the purpose of Logout function like the one available on current Mac OS X. Where are we going to use this? - This button will be installed on Mac terminal in a coffee shop. The staff will Logon to the system in the morning using his/her account. - Any client who wishes to use the system will be given a code to login through the web browser. - A lot of times client' forgets to logout of the browser, which leaves their confidential information stored in the computer - This button or icon will be placed in the dock / or the desktop.. When clicked.. the button will perform a duty of clearing out all the history of the user, the files that the user downloaded, and every session of that particular user... The button must erase the data BUT NOT LOGOUT of the system. While remaining in a Guest account, this button will erase the data of 100's of users that login through the browser. Hope its clear and well-understood!