How Do You Know If An Arashi Con Ticket Is Not Fake?

[prettypiper.livejournal.com]

Minna-san, quick question:

I'm from the Philippines and I'm about to purchase 2 2800NT tickets for the Arashi Taipei Concert in October... from a seller in Singapore... I asked my friend in Singapore to get the tickets for me but we have no idea how to make sure the tickets that we get are not fake ='S

Kiotsukete kudasai!