STEBs -- Everything You Need to Know About It: Definition, Application, and Industry Value

一、Introduction

In global air transport, the security management of Liquids, Aerosols, and Gels (LAGs) is a critical part of airport screening. To ensure international travelers can legally purchase and carry such duty-free products, the International Civil Aviation Organization (ICAO) has established standardized Security Tamper-Evident Bags (STEBs). This article provides a comprehensive overview of STEBs, including their definition, design features, usage, and industry significance.

二、Definition of STEBs

STEBs, or Security Tamper-Evident Bags, are specially designed sealed bags used for duty-free items, primarily Liquids, Aerosols, and Gels (LAGs). Once sealed, any unauthorized opening leaves visible evidence of tampering. Recognized across global civil aviation, STEBs provide a standardized security mechanism for cross-border and transfer flights.

三、Design and Features of STEBs

• Transparent material for quick inspection by security officers.

• Tamper-evident seal that shows clear evidence if opened.

• Printed identifiers including store details, purchase date, and security warnings.

• Multiple sizes, from standard 1-liter bags to larger ones for liquor and perfumes.

四、How STEBs Are Used

1. At Duty-Free Stores: Purchased items are placed into a STEB and sealed at the point of sale.

2. During Transit: Passengers must keep the bag sealed for inspection at transfer security checkpoints.

3. At Final Destination: The bag should only be opened after arriving at the final destination.

五、Benefits and Industry Value of STEBs

• Enhanced security: Prevents substitution or tampering of duty-free liquids during travel.

• Regulatory compliance: Ensures passengers meet international LAGs regulations.

• Operational efficiency: Allows security staff to quickly verify compliant items.

• Commercial value: Builds traveler confidence and supports duty-free retail sales.

六、Sealing of Duty-Free Bags

All duty-free liquid items must be sealed at the point of sale. If the seal is broken or the bag is opened prematurely, items may be confiscated at security checkpoints.

七、Conclusion

STEBs serve as a vital bridge between passenger retail experience and aviation security requirements. For airports and duty-free operators, proper implementation of STEBs not only strengthens compliance and screening efficiency but also enhances consumer trust and supports the sustainable growth of the duty-free economy.