All the major airports will follow Shannon in scrapping the 100ml restriction on liquids carried in cabin baggage.
That's according to travel expert Eoghan Corry, who was speaking as the airport changed the rule that has been in place since 2006 to guard against terrorism.
Its new passenger screening system means the old 100ml restrictions no longer apply for outbound passengers.
They can bring whatever liquids they require without restriction on bottle size, as long as they are stored within cabin baggage.
These liquid containers must be carried within hand luggage and be resealable containers, and they must be presented if requested to the security screening officers.
The cabin bag containing liquids should also be placed at the very top of the items at security screening.
"Please note that if you are entering another airport as part of your trip such as a transit transfer airport or on a return fight the old liquid restrictions of only bringing containers of 100ml or less of liquids, gels, pastes, lotions, and cosmetics through the passenger security screening points at all other EU airports may still apply to you on that later part of your travel journey", the airport adds.
Eoghan Corry told Newstalk Breakfast this change is down to technology.
"The rules haven't changed, what has changed is the technology... four or five companies have been upping the level of technology all the time.
"And what they're all aspiring to is a situation where we don't have to take laptops and liquids out of bags - that they're scanned in 3D.
"Shannon have introduced it - they introduced it before Christmas - Donegal Airport have also introduced it.
"What we'll probably see, and this is really good news, is over the next 12 months the major airports introducing this.
"It's a real breakthrough and it does a lot for security time for the big queues we see at security - especially since COVID".
'Regulations need to change'
Eoghan says the rules themselves will need to be updated for this to take-off on a bigger scale.
"The problem is that this needs the regulations to change: an individual airport upgrading its technology is great, but if you're flying from Shannon and you transfer through another airport like Heathrow the rules still apply.
"So it'll take a while before the regulations change, but it's great to see individual airports being able to upgrade the technology like this".
Eoghan says the costs - of about €2.5m on security, and €17m overall - "are easier in a smaller airport than a large one.
"So it could be a few years - but it's interesting that the UK expects all its major airports to have this in place by December".
