Dublin's 3Arena has warned that there will be a strict "no camera" policy at a gig this week.
American rock band Tool are set to play the venue on Friday night and no photography will be allowed.
Those caught using their phones during the performance will be "ejected" and will not be allowed to return to the show.
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Ticketmaster sent an email to ticketholders today informing them of the policy on behalf of the 3Arena and Tool management team.
The message said: "We respectfully request that you please watch and listen to the show, not your phone.
"You will be ejected from the show without the opportunity to return and without a refund if you violate this simple request and elect to take photos during the performance.
"In the event of a personal emergency, phone use may occur on the concourse away from the performance area."
Doors for the show will open at 6:30pm.
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