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Fears in the US over barcoded boarding passes – a potential security threat? 

November 14, 2012

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The arrival of smartphones with advanced operating systems such as the Android and iOS systems has allowed any user to download their own barcode scanner application – and while this is great for the average user, concerns have been raised over the potential abuse of the applications by terrorists. Genuine threat or just a conspiracy theory? We investigate! 

We all know about the stringent security checks implemented at airports in the US after 9-11, and the headache caused to frequent fliers as a result! In an effort to streamline the process slightly the programme ‘PreCheck’ was implemented – which basically allows random frequent fliers to be selected for ‘expedited screening’ on domestic flights. Fliers selected for these less stringent checks are issued with a boarding pass which features a barcode including data which lets security staff know that they have been randomly selected. The flier then goes through a check which allows them to avoid the full-body scanners, leave their shoes, belts and jackets on as well as retain their toiletries and laptops.

The issue comes in when tech-savvy smartphone users use their barcode reading applications to scan their barcode and see if they have been selected for the less rigorous check, as the date is not encrypted. This means a potential smuggling or terrorist threat can be created, as fliers can tell 24 hours in advance whether they have been selected for PreCheck.

When entered into an online decoder anyone can access their passenger name record, seat assignment, flight number, and finally the last digit of the code which will show if they have been selected for PreCheck – a code ending in 1 means they will undergo the full security check, a code ending in 3 means they won’t – and  it seems thousands of people have been able to access this information to date.

The US Transportation Security Administration declined to comment on the BBC’s request for a statement, although they have previously stated:

“TSA does not comment on specifics of the screening process, which contain measures both seen and unseen. In addition, TSA incorporates random and unpredictable security measures throughout the travelling process.”

There are currently two ways to utilise this system in the US. For a fee of $100 a passenger can request a background check which if approved will allow them access to the PreCheck system for five years. An airline might also offer the system to frequent fliers for free.

Of course there is still a measure of security as random checks are still performed – but the ability of fliers to predict their status has security experts worried. So watch this space – we will let you know how the story unfolds…  

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    Author

    Our blog researchers include local barcode experts from the SA Barcodes team: Cat Robinson and Andreas van Wyk

    SA Barcodes Team

    The aim of this page is to educate you, our customer, with all the information you may require about the different facets of barcodes and how they work.

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