Plot hole: The entire plot hinges on the villain's gang obtaining the tablet that allows admin access to the building's systems. However, it can only be unlocked via facial recognition and it is keyed only to Will Sawyer's face. In fact, when they finally do get it, Xia unlocks it by holding it up to Sawyer's face. So what was the point of trying to steal the backpack containing the tablet? Without Will to unlock it, the tablet is useless.
Continuity mistake: As Ben and Will are first going up the elevator in the tower, Ben mentions they needed someone like Will to check the math on their systems. One shot shows Will standing still looking at him in a close up, but in a wide angle it shows Will shift and turn a bit towards Ben. Then in the next close up shot of Will he's suddenly back to where he was. (00:10:50)
