Travels with my box cutter

I traveled all the way to Italy and back with a box cutter in my purse.
I'm not proud of it. I just forgot it was there. Easy to do. I haven't really cleaned out my purse since the Reagan administration--no, make that the Nixon administration.

I have arthritis in my hands, so I carry a box cutter to open those little cellophane packets of crackers and breadsticks they give you in restaurants. Very handy. Somehow it got through the metal detector--both ways. Must be some really crappy form of metal. If I remember rightly, the thing cost a dollar at the hardware store.

It was finally discovered at the airport in San Suis Obispo, CA. It didn't set off the metal detector there--my keys did that. I wonder what kind of metal it is. Kryptonite?