Yes, airport security can clearly see a vape on an X-ray scanner, and it is a very common item for them to process. On an X-ray screen, a vape appears as a distinct rectangular or cylindrical object with high-density metal components, wiring, and a visible battery cell, making it easily distinguishable from other electronics. TSA and international security agencies do not prohibit vapes, but they have a strict "Carry-on Only" rule; vapes are forbidden in checked luggage because their lithium-ion batteries pose a fire hazard in the cargo hold. In 2026, security agents are primarily looking for fire hazards, not checking the liquid content unless it looks like a large quantity of explosives or illegal substances. To avoid extra screening, keep your vape in its original packaging or a clear case, and ensure the tank is only 3/4 full to prevent leaking due to cabin pressure changes. If an agent asks, simply identify it as a "vaping device," and as long as the battery is secured, you will pass through without issue.