All major UK airports must introduce 3D luggage screening equipment by the end of 2022, the government says.
Ministers say the technology will increase security, speed up pre-boarding checks, and may end restrictions on traveling with liquids and laptops.
The equipment, similar to hospital CT scanners, is already installed at London's Heathrow Airport.
It gives a clearer picture of the contents of a bag, which the staff can zoom in and rotate for inspection.
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At the moment, passengers taking liquid in the cabin baggage are limited to containers of no more than 1
The boundaries have been in place since November 2006. Their introduction ended a ban on liquids in the cabin imposed three months earlier when British police said they had foiled a plot to blast as many as 10 aircraft using explosives which were hidden in drinking bottles.
new plans, Prime Minister Boris Johnson said the scanners would cut down on the "hassle" of travelers and improve safety.
"By making travel through airports in the UK easier than ever, this new equipment will help increase the important role our airports play in securing the UK's position as a global hub for trade, tourism and investment," he added to.
Heathrow has revealed that it is spending £ 50 million to roll out the technology over the next few years.
It is the first UK airport to install the equipment, which it has tried since 2017.
Airport CEO John Holland-Kaye said it would make travel "less disruptive", allowing scanners to see what liquid was in the luggage.
The scanners are intended to be rolled out to other UK airports over the next few years.
Transportation Secretary Grant Shapps said the new equipment means "no more pulling out your socks and underwear, and having to separate your fluids and take out laptops".
He added that the airlines would pay for changes, rather than the taxpayer.
The technology is already used by US airports, including Atlanta's Hartsfield-Jackson and Chicago's Oare.