There are TSA-compliant models but they exclude a knife blade, seriously limiting their usefulness.
Immediately after 9/11 when there was still an armed military presence in the airports
I was sent by my then employer to service some automated check-in kiosks.
When I first entered the terminal I was cleared by security along with my tool attache.
Later I realized I needed some supply from my van.
When I returned I didn't realize I still had a utility knife in my pocket.
When I passed through the checkpoint again the fatigue-clad National Guardsman drew his automatic weapon.
In those very tense times I almost single-handedly shut down JFK International Airport!
Chris