Idea Design Privacy Protector Erasing Pen by Liu Mingde This product consists of three components that can’t be found on a regular ball point pen. An alcohol storage barrel is placed inside tube of the pen. Together with a spray head beside it, and a cleaning cloth which is fixed around the outer body.To remove your personal information from the delivery paper. Simply press the trigger at the very end of the pen, a small amount of alcohol will be spraying out from the spray head, onto the delivery paper. Then use the cleaning cloth provided to wipe out any writing that contains your personal details. A simple and smart way to protect your privacy.