Airport scanners detect drugs using X-ray technology and algorithms to identify substances with unusual densities or shapes. Organic materials, like drugs, appear differently than typical luggage contents. Advanced scanners can also detect chemical traces.

Airport security employs several technologies to find hidden drugs. X-ray scanners reveal shapes and densities. Millimeter wave scanners create 3D images, detecting objects concealed under clothing or within bags. Trace detection technology identifies microscopic drug residue on luggage surfaces.

How X-ray Scanners Work

• X-rays pass through luggage.
• Denser materials absorb more X-rays, appearing darker on the screen.
• Operators look for unusual shapes, sizes, or densities.
• Organic substances like drugs often have a different density than clothing or plastics.

Millimeter Wave Scanners

These scanners use radio waves to create a 3D image of a person or bag. They are effective at detecting non-metallic items hidden under clothing or within luggage.

• Less invasive than X-rays.
• Can detect a wider range of materials.
• Images are analyzed by security personnel.

Trace Detection

This method identifies microscopic particles of drugs on luggage surfaces.

1. Luggage is swabbed with a special cloth.
2. The cloth is analyzed by a machine.
3. If drug residue is present, an alarm is triggered.

Scanner Comparison

Security personnel are trained to interpret scanner images and identify potential threats. False positives can occur, requiring further investigation.