No Such Thing as 100% Detection

The Reality of Security Screening

Security screening technology continues to advance rapidly. AI-Assisted Imaging™ technology, automated analytics, and high-performance x-ray systems have significantly increased the capability of modern checkpoints.

Yet one fact remains unchanged: There is no such thing as 100% detection…yet.

All systems operate within defined parameters. They detect based on trained datasets, known threat signatures, and configured thresholds. Detection is therefore inherently probabilistic—not absolute. And any system built on probability carries inherent limitations.

Technology Enables—It Does Not Decide

Technology has transformed the screening environment. It delivers clearer images, faster processing, and greater consistency.

But it does not replace judgement.

At its core, technology presents information. Detection is achieved through interpretation—how that information is assessed, challenged, and ultimately acted upon. Even the most advanced systems remain bound by what they have been trained to recognise.

This is where the distinction matters: Technology supports detection. It does not independently define it.

Operators Still Remain The Deciding Factor

Operators are not a supporting function within the checkpoint environment—they are central to it.

Their primary responsibility must remain fixed on the images being presented. Effective screening depends on active interpretation—identifying subtle anomalies, recognising inconsistencies, and questioning what does not immediately align with expectation, even when AI-assisted imaging™ provides a classification or prompt.

This is not passive monitoring. It is a continuous, high-focus cognitive process.

In lower-traffic environments, operators are often required to divide attention across multiple responsibilities. While operationally necessary, this must not dilute their role in image interpretation and final decision-making.

Beyond the screen, operators assess behavior, profile individuals, and understand their surroundings. This broader situational awareness introduces a layer of detection no current automated system can 100% fully replicate.

The importance of this role is reflected across other high-risk industries. In commercial aviation, for example, automation has reached extraordinary levels—yet trained pilots remain responsible for oversight and final decision-making. The objective has never been to remove the human element, but to strengthen it. Security screening is no different.

Speed and efficiency are valuable indeed, But they still remain secondary to the task at hand.

Detection is the objective—and the operator is ultimately accountable for achieving it.

Detection Is Built in Layers

No single system delivers effective security across all levels.

Detection is achieved through layers—where technology and human expertise operate together. Systems provide high-quality imaging, data, and intelligent prompts. Operators apply context, judgement, and decision-making.

This layered approach creates a resilient and adaptable screening environment capable of responding to evolving threats.

Moving Faster Isn’t Necessarily Safer

In a previous article, “Throughput Without Detection = Risk at Speed,” we addressed a growing industry trend:

Efficiency is often positioned as the primary benchmark—faster processing, higher throughput, reduced queues, But without effective detection, these metrics lose their meaning.

The purpose of a checkpoint is not simply to move people faster.

It is to identify potential threats—consistently, accurately, and without compromise. Speed is important but effective detection is critical.

HISSCO’s Approach

HISSCO’s approach is built on a clear principle: technology must strengthen operators.

By integrating multiple detection technologies and delivering clear, actionable information, HISSCO ensures that operators remain fully engaged in the screening process—actively interpreting, assessing, and making informed decisions.