One of the big problems facing airports is the continued use of "absolutely insane" post-9/11 passenger screenings, according to the CityJet founder.
Pat Byrne, founder and chair of Irish airline CityJet, was speaking after over 1,000 passengers missed their flights at Dublin Airport last weekend, after queues formed outside the terminals due to a lack of available security workers.
Mr Byrne told Newstalk that the nature of screenings, which includes removing belts, needs to change.
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He said: "The real issue is the labour-intensive passenger screening that we're doing 21 years on since 9/11. There are alternate methods to that - profile screening - but there's no political will across the group-think of governments around the world to introduce it, because they fear they'd be accused of discrimination".
Mr Byrne said that the current system that has been in place in the aftermath of the 9/11 attacks are not fit for purpose now.
He said: "The hands-on, labour-intensive system that we're still putting up with 21 years on is absolutely insane.
"I'm talking about more random testing, higher quality - higher resolution - x-ray machines, like they've introduced at Shannon, where you don't have to take your liquids out of the bag."
Meanwhile, Mr Byrne said that cognitive skills to observe passengers are not being introduced over fears of discrimination accusations.
He explained: "Using cognitive skills to look at people: it's not colour - it's body language, it's posture.
"There are a lot of things that scientific people know about, but it is not being introduced and it's not being trialed because of the fear of discrimination accusations."
According to Dublin Airport's website, passengers passing through security are required to remove belts and shoes and to submit all baggage for an x-ray screening.
Meanwhile, only liquids in containers of 100ml capacity or less, fitting comfortably into a one litre transparent plastic bag (approximately 20cm x 20cm) when fully closed, are permitted.
This transparent bag, with containers of 100ml should then be presented at the passenger security screening area.
For more information and advice on check-in and security screenings at Dublin Airport click here
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