The “Oppenheimer” director also said he’s never used email, somehow.

These are all utilities thatChristopher Nolanhas no access to on his phone.

He doesnt use a smartphone.

Christopher Nolan says he carries a burner phone because he was inspired by The Wire

getty; HBO

Colbert asked Nolan about his phone and email usage during a rapid-fire barrage of questions.

I dont have an email address.

Ive never used email, Nolan said.

And I dont have a smartphone.

I will carry a pay-as-you-go dumb phone thing.

getty; HBO

So you have a burner phone, Colbet joked.

Are you working with the cartels?

I was inspired byThe Wire, definitely, the filmmaker responded.

Colbert also asked Nolan why cell phones and UGGs are banned from his sets.

I dont allow cell phones on set I venture to minimize distractions on set, Nolan responded.

And UGGs are distracting?

Well, they can be for the other actors, yes, the director replied.

Nolan explained the rationale behind his anti-UGG policy.

Watch the full interview above.