Train users could soon have to pass through airport style security checks.
The Home Office is looking into a major overhaul of security at railway stations throughout the UK.
Plans have been announced to introduce brand new security scanners which would search railway users for guns, knives and explosives.
Though the move is in the early stages of planning, the Home Office insists it will not proceed with the revamp if it would result in a significant increase in delays for passengers.
The aims of the change in security have been published in a report, which claims:
"The main focus is on the detection of explosives and weapons on people and in bags,"
The Department of Transport are also involved in the proposals, and say they hope to "balance the need to protect passengers with the need to travel freely and easily on rail networks."
In Wales, Cardiff Central train station handles roughly 12.5 million passengers per year, whilst Swansea station deals with almost 2.5 million.
The South Wales line with links to London, is one of the busiest passenger routes in the UK.
Recently, plans have been announced to electrifying the Welsh Railway network in a move which would vastly increase the number of train users.
Critics say the introduction of the proposed security measures would add great delays to passenger's travel times - with some experts claiming that the technology to scan rail users thoroughly without causing delays does not exist.
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