Anime porn was displayed at a train station after pranksters hacked a big screen.
Commuters were left shocked by the explicit images at the station in Aberystwyth, West Wales, on Sunday.
Owner of the screen Shaun Jones called the incident ‘childish’ and explained a ‘fault’ allowed web searches.
The advertising board showed Japanese animation characters having sex and was up for ‘four or five minutes’, according to onlookers.
Mr Jones, of Emerge Advertising, said: ‘We’ve never had anything like this happen before.
‘We take very seriously what goes on those screens. It was quite a childish thing to do.
‘We can only apologise.’
The board is usually used for businesses to advertise in the seaside town.
After the x-rated images appeared they were quickly covered up and engineers were called to shut down the screens.
Police are investigating how the animated porn appeared.
A police spokeswoman said: ‘Dyfed-Powys Police received a report that pornographic images were displaying on an interactive screen at Alexandra Road, Aberystwyth, at around 5.30pm on Sunday, November 4.
‘The screen was quickly covered and engineers were called to switch the screen off.’