Log the people who use your shared memory stick. With an autorun file that loads an excel spreadsheet when the USB stick is pluged in. The VBA then adds the users login details, time and the size of the files on the memory stick to the next blank row in the spreadsheet. The user is prompted to let them know their use of the stick is being logged. As the stick owner you can view the log at any time and monitor if the contents is being removed after each use.