TSA Warns Against Packing Knives and Scissors in Carry-Ons

Even as the Transportation Security Administration (TSA) bans knives and scissors from carry-on bags, some multi-tools are engineered to comply.

OH
Olivia Hart

June 6, 2026 · 2 min read

TSA agent inspecting carry-on luggage, highlighting prohibited knives and scissors versus an approved multi-tool watch.

Even as the Transportation Security Administration (TSA) bans knives and scissors from carry-on bags, some multi-tools are engineered to comply. The Leatherman Tread Tempo watch, for example, discreetly packs 30 tools into its wristband and remains fully compliant. This creates a unique challenge for travelers: navigating strict prohibitions alongside innovative, rule-abiding designs.

The TSA strictly prohibits bladed items in carry-on luggage, yet specialized multi-tools are explicitly designed to meet these regulations and pass through checkpoints. This tension between explicit security directives and innovative product design often leads to traveler uncertainty. Travelers must navigate a complex landscape of explicit rules and implicit discretion. Pre-flight verification of specific tool models and understanding officer authority are essential to avoid issues, as these versatile devices push the boundaries of what is permissible.

What Items Are Prohibited by TSA in Carry-on Luggage?

The Transportation Security Administration consistently prohibits knives and scissors from carry-on luggage. This fundamental regulation prevents potentially dangerous items from entering aircraft cabins, according to SlashGear. Adhering to this baseline rule is crucial to avoid airport security delays.

The Rise of TSA-Compliant Multi-Tools

Manufacturers actively innovate to create multi-tools adhering to TSA carry-on specifications. Leatherman, for instance, offers numerous compliant products. These include the Tread, Tread LT, Tread Metric, Brewzer, Piranha 2, Style PS, Mako Ti, Grind, Jam, Thruster, Pump, Rail, Cam, and Rime, according to Leatherman. The Leatherman Tread Tempo watch, a notable example, incorporates 30 distinct tools within its wristband and is designed to be TSA compliant, according to thebarefootnomad.

These designs push the boundaries of what constitutes a "tool" in carry-on luggage. They offer utility without violating core security directives, yet their innovative nature demands traveler awareness of evolving regulations.

Officer Discretion: What Happens if TSA Flags Your Luggage?

Despite manufacturer claims of TSA compliance, the final decision rests with the individual TSA officer, according to SlashGear. This introduces a significant gray area; interpretations vary. The market for bladeless multi-tools forces officers to make subjective judgments on highly engineered items. Travelers with technically compliant tools like the Leatherman Tread Tempo operate in this legal gray area, risking confiscation despite following rules. Compliance becomes a guideline, not a guarantee, at security checkpoints.

How to Pack a Suitcase to Avoid TSA Issues

To mitigate potential issues, travelers should research and confirm multi-tool compliance before arriving at the airport. Consult manufacturer guidelines and official TSA resources to avoid surprises. Placing multi-tools in an easily accessible part of a carry-on, or opting for checked luggage, can streamline screening.

As multi-tool innovation continues, the line between prohibited and permissible items will likely remain a dynamic challenge for both travelers and TSA officers.