Ireland's consumer watchdog is calling for action on ticket scalpers as U2 bring their Joshua Tree Tour to Dublin.

Fans from all over the world will be in town for tomorrow night's hotly anticipated spectacle at Croke Park.

Dermot Jewell from the Consumer Association of Ireland says more needs to be done to stop ticket touts:

“We are not in a good place,” he said. “We are not sure if legislation is on the way, there are quite a number of people pushing very hard to get legislation across.”

“It would help because we need to start somewhere and right now we are relying on the artists or others to try and take some effect.

“We need legislation and that legislation needs to ban the resale of tickets outright.”

Mr Jewell believes the long-term answer to the problem may be the introduction of a single online digital marketplace for the resale of unwanted tickets.

He told Newstalk’s tech correspondent Jessica Kelly that the site could be run by an independent body or by the State – but it would be the only legal site for the resale of tickets.

U2 on stage at the Olympic Stadium in Berlin, Germany, 12-07-2017. Image:  Britta Pedersen/DPA/PA Images

Joshua Tree Tour

Fans are being warned to give themselves plenty of time to get to the venue - as extra security checks will be in place.

The gig is one of the most hotly anticipated events of the year – with fans set to enjoy all the hits from the band’s seminal fifth album – original released in 1987.

There will be over 80,000 people at the gig – with doors opening at 5pm.

Niall Stokes editor of Hot Press says it is a hugely significant night.

“There is recognition that the place to see U2 is in Dublin - because it is their home and it is the place where they derived the inspiration to go out there and be a rock and roll band and try to conquer the world,” he said.

Gardaí and MCD are warning people to arrive early but not too early, prepare to be searched, and not to bring any big bags. 

With reporting from Nicole Gernon ...