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Airport security depends on finding dangerous materials without bringing passenger movement to a halt. Liquids remain one of the most visible compromises: travelers are generally limited to containers of 100 ml or less because determining what is inside a larger bottle quickly and reliably is not possible at every checkpoint.
New screening technology could begin changing that.
The Transportation Security Administration (TSA) is considering allowing some TSA PreCheck passengers to carry full water bottles through security at selected airports in the coming months.
The potential program would initially be limited to checkpoints equipped with newer computed tomography (CT) scanners and automated detection capabilities.
Unlike conventional checkpoint X-ray equipment, CT screening provides more detailed information about objects inside baggage. Combined with automated detection, the technology can distinguish water from other liquids and identify potential threats without automatically requiring passengers to discard the bottle.
According to CBS News, the existing 3-1-1 liquids rule remains in effect, and the TSA is not currently preparing to remove restrictions on liquids across the board. The technology needed to screen larger bottles exists, but officials said it has not been acquired at the scale necessary for nationwide deployment, including for all PreCheck passengers.
The possible change illustrates a broader direction in security technology: detect more while interrupting people less.
That principle extends well beyond baggage.
At railway stations, shopping centers, stadiums and large public events, conventional checkpoint screening is not always practical. Thousands of people may need to move through an area continuously, creating demand for technologies capable of identifying potential threats remotely without stopping every person individually.
One future layer could involve systems that analyze behavior, movement, physiological indicators or unusual patterns to flag a person who may require additional attention before an incident occurs. Such technologies would face substantial accuracy, privacy and false-positive challenges: unusual behavior alone does not establish hostile intent, and any operational system would require careful validation and human assessment.
But the HLS objective is significant: move from discovering the weapon or hazardous material at the checkpoint toward identifying meaningful warning indicators before a potential attacker acts.
The same capability could have dual civilian and homeland-security applications, from public transportation and shopping centers to stadiums and mass gatherings.
This challenge is also relevant to INNOFENSE, the innovation program operated by iHLS in cooperation with the Israeli Ministry of Defense and DDR&D (MAFAT). Companies developing remote behavioral analysis, anomaly detection, physiological sensing or other technologies capable of identifying emerging threats can apply with solutions that could be adapted and demonstrated through a POC with the defense establishment.
Smarter airport scanners show one way security can become less intrusive without abandoning detection. The larger opportunity is to take that idea further: protect the crowd while allowing the crowd to keep moving, and identify the threat early enough to prevent the attack rather than respond to it.
Are you working on a technology related to behavioral analysis, anomaly detection or remote sensing, and think it could be adapted to identify security threats in crowded environments? Apply to INNOFENSE now!
