What have bands, artists, festival promoters and other music events done to try and thwart ticket touts and fraudsters? Here are some examples.
Arctic Monkeys set up a balloting system so only people who were registered on their website were eligible for tickets for their tour.
The Sheffield group said they were "trying hard" to fight touting.
Fans had until a certain date to register their details and winners were selected at random.
But despite their best efforts, several hundred tickets appeared on auction websites within minutes.
One pair of tickets for their homecoming concert at Sheffield's Leadmill changed hands for £266.99 - despite having a face value of just £24 each.
Australian pop star Kylie Minogue demanded touted tickets for her London Homecoming shows were cancelled so genuine fans could have the chance to see her perform.
Kylie's shows are known for their glamorous costumes
Seats at her concerts in January sold out in just minutes.
But Minogue was upset to discover tickets were being resold on eBay for more than five times the face value.
Promoter Harvey Goldsmith said at the time: "eBay are an absolute disgrace. They have no right to be doing what they are doing.
"They are a thorn in the side of the industry. Every time we do a show we have to track eBay down, we have to find the seats and we cancel them."
Canadian indie stars Arcade Fire urged their UK fans not to buy tickets from internet auction sites for their recent concerts.
Their five London dates sold out quickly, and the band advised against purchasing tout-offered tickets, warning that they were likely to be cancelled.
In a bid to outmanoeuvre the touts, they released more tickets for sale prior to each of their London shows for those willing to queue up to seem them perform.
The band said: "Please don't encourage the touts."
Rock group The Police announced plans for a "greatest hits" world tour in February, after a 23 year hiatus.
Police fan club membership costs $100
The tour, which starts in May, will begin in North America and take in South America, Europe, Japan and New Zealand.
Tickets went for the UK leg of the tour went on sale in March, and within one hour, all 120,000 tickets had been sold.
The Birmingham and Manchester arena shows sold out within half an hour, London's Twickenham Stadium followed in just under an hour, and Cardiff quickly after that.
In a bid to give their genuine fans a chance to get tickets, members of the band's fan club had been able to buy tickets a few days before they went on general sale.
Fan club membership costs $100 (£50).
Despite the measures, some of the fan club tickets still made their way onto internet auction sites, such as eBay, at inflated prices.
The Rolling Stones also give their fans a similar opportunity.
In January, U2 took steps to warn their fans about adverts for gigs in London and Paris.
The adverts offered tickets for concerts which the group said were bogus.
They said: "Some fans have been in touch to let us know of adverts appearing in the press offering tickets for U2 shows in London and Paris this year.
"Take it from us, these adverts are a scam - there are no live plans for this year. Do not buy tickets for U2 shows unless you've read it here first."
Glastonbury Festival - which has been a popular target for touts in recent years - fought back this year.
The last Glastonbury Festival was held in 2005
In 2005, tickets for the three-day event changed hands for up to £700 on the black market.
This year, the festival's new ticketing system required fans to register their details during February - and almost 400,000 people did so.
They had to provide a passport-sized photograph, which will be printed on their ticket.
Glastonbury founder Michael Eavis said tickets would be scanned using an infra-red system at the entry gates to make sure the photographs had not been tampered with.
It took just one-hour and 45 minutes before the 137,500 tickets to be snapped up when they went on sale on 1 April.
eBay later confirmed it had not removed any listings for Glastonbury tickets and was not barring users from trying to sell their passes.
It led Mr Eavis to declare that they had successfully beaten the touts.
"I'm absolutely thrilled," he said. "It seems to be a 100% success."
The Live Earth climate change concert at Wembley Stadium on 7 July will feature performances from Madonna, and the Red Hot Chili Peppers amongst others.
Organisers Live Nation say they have tried to be fair to genuine music fans by running a ballot for tickets.
Those interested in tickets had 72 hours to register their interest in buying a pair of tickets.
When the ballot closed, organisers randomly allocated places, then sent a text message to those who were successful, which included details on how to go about buying their tickets.
Live Nation director Stuart Galbraith also contacted eBay to ask if it would agree not to let sellers list tickets for the charity concert.
THE BRIT AWARDS
Organisers of this year's Brit Awards pledged to "get tough" on ticket touts at February's ceremony.
Muse were big winners at this year's Brit Awards
They said touted tickets for the show would not be honoured, while ticket holders would not be admitted if they could not prove the tickets were bought in their name.
"We think it is unfair on the artists, the charity and music fans for touts to exploit the event," said a spokeswoman.
Tickets for the Earls Court charity event, which starred Take That, Snow Patrol and the Scissor Sisters, sold out within hours but were soon being resold on auction website eBay.
"All of the artists who perform at the Brit Awards do so for free because the show is a charity fundraiser," said event director Maggie Crowe.
"The terms and conditions explicitly point out that tickets are non-transferable."