film is great but has a mistake at the end

Rating: 7/10 (12 May 2017)

It shows that Caleb hacked the security system to open the door at the time of power failure. At the end when Eva left him at the facility he tried to access the computer and the power has gone again. it shows that he is trapped inside by showing that he is trying to break the door with a chair, which he don't have to because he has already hacked the system to open all doors at the time of power failure and the door is suppose to open