Audio problem: Jack "hypnotises" Chase in the bar to make him apologise to Merritt and slaps Chase on the face to wake him back up again. Chase then says "Merritt", but his lips don't move. (00:49:00)
Audio problem: In the bar, when Chase is telling Merritt his ploy of distracting him while the other Horsemen screw over Walter isn't going to work, whenever the shot is behind Chase, Chase's mouth movements do not match the dialogue when he is speaking. (00:48:35)
Continuity mistake: When the Horsemen arrive at the Macau Science Centre, Allen Scott-Frank tries talking with the South African gangster and is ignored. The gangster rolls up the window and the shot cuts to the Horsemen. Daniel is shown looking towards Merritt, but when Allen says "or not" in the next shot, Daniel is suddenly looking at Allen. (00:54:05)
Audio problem: When the Horsemen are at the science centre and are posing as doctors attempting to trick Allen, Lula says she did sent that e-mail and Daniel says "The other day, yes", but Daniel's lips do not move with the line. (00:55:10)
Visible crew/equipment: The remote controlled camera is visible in the scene where the truck full of the horsemen is pulling into the garage. Look as the camera pans down and we see the top of the van. The camera looks like a box attached to some poles.
Continuity mistake: When Jack is showing Merritt how to throw cards, just after he throws the last card, Merritt says "Not bad" looking straight forward at the card, but in the next shot, Merritt is looking at Jack. (00:12:40)
Continuity mistake: When the security guard at the OCTA launch finds the Evans Mental Facility wristband on the CCTV guard's wrist, the wristband and wrist are pointed away from the CCTV guard's face, but in the next shot, the wristband and wrist is directly facing the CCTV guard. (00:18:10)
Continuity mistake: When Daniel is performing in London, there is a wide angle shown in the scene, with Daniel under blue lighting. In all other shots in the scene, he is under white stage light.
Answer: Walter thought the chip was real because he placed it under a scanner and the scanner confirmed that the chip was real. However, given the fact that later on it was revealed that the whole plane sequence was a set up, it is probable that the device used to scan the chip was actually a fake that was used to make Walter believe the chip was real, most likely throw him off guard.
Casual Person