When Eve is sitting at the desk in the office, the man behind her is leaning over a desk talking to a woman, then gives the woman a file, then turns and walks towards Eve while looking at her, and walks away. Then every time the camera shows Eve again, the man in the background repeats the same action several times.
The scratches on Casey's face are very obvious in the hallway, less obvious in the wide shots in the photo studio, and completely gone in the close-ups in the photo studio.
Sunnyvale is an actual city in Silicon Valley--not made up as they keep saying.
When Eve is baking and catches the kitchen on fire, she screams out for "Lindsay" instead of Casey.
At the end of the movie when Casey and Ben are looking for Eve in the 'factory,' Eve comes out from behind the star. Before she comes walking out she's visibly standing behind the start waiting for her cue; her pink sweater is visible to the left of the screen.
When Eve ventures out with Casey for the first time, going down the sidewalk, we can see crews in the background diverting regular traffic away from the filming location and to a detour.
A corner store near the bookstore sells local Vancouver newspapers (The Province and The Sun).