When the robot dumps out the jewelry on the floor the square black pad that was with them lands in the middle of all of them on the floor. After Prof. Hinkle stops the robot from stepping on the clerks head the pad has moved off to the side of the jewels.
The controller uses a TV screen and should be completely flat but when the crooks are locking the professor and the robot up in the room the crook has the controller in his hand holding it by the strap. It's obviously a crudely built prop because you can see wrinkled paper where there should be a smooth tv screen.
They are all watching the robot robbing the safe. As the head crook says "Good now bring him back here fast" you can see the shadow of the head of a crew member moving in the lower left of the sky light window behind them.