Log Out
From WTS Help
Clicking on this icon will log you out of your account with WTS. This should be a required step to use when you are not using the WTS website or the hand-held. This will prevent other users from receiving or delivering packages under your account, or makes changes at an administration level if the current logged in account has administration privileges.
It is also recommended that you disable your web browsers ability to remember password history for your WTS website.