The best thing to do in this scenario would be to save all of the work that the user has just finished on a personal data USB drive and then delete any of his work off of the computer. Also, if the user entered into the computer using their own account they should also log off from the computer. The next individual can log in with their own account if they need to use the computer. This would make sure that their work is safe and with them, as well as making sure that no other individual can see, take, or modify the work that they have done.
