Avengers: Doomsday trailer was screened at the CinemaCon in the presence of directors Anthony and Joe Russo and Marvel president Kevin Feige.

Even though, the event was attended by many fans and critics, still not a single clip leaked from the first ever screening of the trailer.

There is no chance of the trailer being leaked from the CinemaCon as they make sure to keep it privacy of the studios intact through “anti-piracy technology.”

One of the fans have explained in detail the real reason why didn’t the much-anticipated trailer leak from the event.

A social media account by the name Cinenewz shared “At CinemaCon – sometimes you’ll see a green laser shining on random seats around the theater.”

“At first you think – what punk troll brought a laser pointer to this – until you realize it’s actually the theatre’s sophisticated anti-piracy technology at work.”

According to an internet user, the staff members at the CinemaCon allegedly user night-vision to spot people using their phones while the trailers are being played.

“Lasers scramble and black out their phone screens. Every seat in this theatre is being observed. Some attendees have even speculated it may be automated.”

This is the reason no footage has been leaked from new Avengers movie.

The highly-anticipated MCU film was represented at the film festival by actors Robert Downey Jr and Chris Evans, who will playing Doctor Doom and Steve Rogers respectively.

Avengers: Doomsday is heading to theatres on December 18.