After some images of Akshay Kumar and Sonakshi Sinha’s film Joker were leaked on the Internet from the shoot, director Shirish Kunder is now taking extra care. He recently banned the use of mobile phones on the sets of the film. Shirish’s orders were immediately implemented by the team members, before the shoot of the Chitrangda Singh item number, Kafirana. Looks like Sonakshi Sinha’s item song in the film is not generating enough interest. So Shirish wants to be all hush-hush about Chitrangda’s number and yet create a buzz about it by banning cellphones. Fair enough. At least that way people will be curious about his film, what with a disaster like Jaan-E-Mann: Let’s Fall in Love… Again in his repertoire!