Irish Rail says new text alert system to help passengers report anti-social behaviour will be rolled out on DART services from next month.
The system will allow people to discreetly alert security to any ongoing assaults, thefts or other harassment on board trains.
The measure will also be extended to commuter services in Dublin, the Irish Times reports.
Speaking on Newstalk Breakfast, Irish Rail's Barry Kenny said the service will be introduced from early July.
He explained: "[It] will ensure we can liaise with our security centre, and deploy security forces - or indeed engage with the gardaí, if required - to address any issues that arise.
"This is something that will go through a central CCTV-monitoring system, which covers all of those stations."
He added it will allow the rail company and security personnel to "understand what the issue is, and put resources in as quickly as possible."
Irish Rail last year said that, based on both staff and customer reports, incidents of anti-social behaviour on trains had been growing.
There have been 128 incidents of anti-social behaviour on the DART since the start of last year.
It has led to an increase in the amount of security personnel on trains.
Earlier this year, the transport company confirmed it would be introducing new staff who'll help tackle anti-social behaviour such as people playing music too loud.