Teenagers who use Facebook in Ireland will not be able to download a new "panic" button being introduced in Britain today.
It is being introduced to offer immediate help to young people who fear they are being targeted by predators on the popular social networking site.
From today in Britain, all under 18s who are on Facebook will be prompted to download the panic button when they log in.
It has a direct link to a special unit in the UK which cracks down on internet paedophiles.
Several high-profile cases led to calls for a panic button, including the rape and murder of a 17-year-old who was killed by a convicted sex offender that she met on the site.
But Irish teenagers will not be able to download the panic button, because it is only available to people with UK IP addresses.
This means that teens who encounter a problem with an online user will have to trawl through the site to complain and seek help, instead of just pressing a single button.