When Dr. Waldon is locked in the cell at the mental institution, you can clearly see the deadbolt lock can be easily unlocked from the inside.
When Lionel visits Chloe at The Torch, Chloe quickly switches to a different file to hide that she was looking at the dance photos of her and Clark. The close-up shot of her mouse is a generic white computer mouse. But the next shot shows a green mouse that matches the Alienware computer purchased for The Talon with Lionel's grant money.