Esquire Anti-Theft Luggage Zipper Strap,

Product Overview
Anti-theft Luggage Zipper Strap-We're presenting a security announcement today surrounding the protection of your valuables while traveling. The technique of using a ballpoint pen to open any luggage utilizing a zipper, is one that's been publicly disclosed for some time now.
 
There are unfortunately many that aren't aware of this risk, or that it leaves no tell-tale sign that the suitcase has even been tampered with by simply shoving a ballpoint pen into the zipper track, you can pull the suitcase lid open and access the interior contents. Then with a simple movement of a still-locked zipper slider you can reseal the suitcase without leaving evidence of tampering.
 
The fact of the matter remains that any suitcase, luggage or pack that utilizes a zipper is susceptible to this attack. Introducing the Anti-theft Luggage Zipper Strap that will at least either secure the interior contents of your suitcase or provide evidence that your belongings have been tampered with.

Features
"Anti-theft Luggage Zipper Strap
Prevents zipper puncture and resealing
Reusable - you don't throw these away"