The 27-year-old actor said he thinks there is not any need for him to join sites like Twitter or Facebook, reported People magazine.
"I think Twitter is great for certain things and certain people, there are people I really enjoy reading on Twitter. But I don't know why anyone in my position would ever be on it," Radcliffe said.
The actor said he is not a fan of technology and got an e-mail id just three years ago.
"I got email three years ago. I managed to not because I loved not having it, and then I had to get it cause I joined a fantasy football league.