This is one of those Catch-22 deals. I am going with the probabilities here that the traveler knows less than the thieves and needs to know this, while the thieves know this…so, I am enlightening more good people than assholes.
ITS Tactical is an excellent tactical-survival solutions (skills and awareness) site. He had put together an instructive and alarming video to show you the plight for the traveler! Breaching the Zipper.
Imminent Threat Solutions (ITS Tactical) provides a wide range of topics to consider in a perhaps new way. Check it out and the zipper-pen video.
SwittersB & Exploring 
It’s too bad most zippers are made of plastic these days. I would suspect the metal ones would offer a bit more resistance. But when a crook wants something, they find a way. Up until a few years ago we did a lot of traveling and always used only carry-on. I like to keep an eye on my stuff! Interesting website (ITS Tactical)
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Thanks David for dropping by and commenting.
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