Continuity mistake: In the scene where Ben and Riley meet Abigail for the first time, Abigail's assistant ushers them into the office and the camera shows her walking out of the office. In the next shot you see the camera on Abigail talking to the two men. When the camera pans back to them, you see the assistant leaving the room again.
Continuity mistake: When Riley is in the Subway to install the video feed, he places his laptop on a table. On its left side there is a little antenna. When the laptop is on the ground, the antenna is horizontal. In the next shot, the antenna is already folded out in a 45° angle.
Factual error: During the heist preparation scene, Riley enters the National Archives Metro station to record surveillance camera footage. Surveillance camera feeds for the National Archives would never be accessible within a Metro station due to both security concerns and the fact that the feeds are not needed outside of the National Archives building.
Continuity mistake: When Dr. Chase is entering her password she goes for the first letter on the keyboard. Her little finger is at the right end of the space bar and her index finger is hitting the key. When the shot changes to the close-up of her hand, the little finger is in the area of the CTRL key and the middle finger is the one which hits a key, in the area of the m or comma key.
Revealing mistake: When Ben and Ian get the two different fingerprints from two different people, Mr. Ferguson [random security guard] and Abigail Chase, they are the exact same fingerprints. This can be confirmed on the DVD with pause and zoom. Moreover, the two scans show exactly the same emphasis/pressure on different regions within the print, with more light and detail on the left side and little in the center.
Other mistake: In the scene where Ben, Riley, and Abigail arrive at Patrick's house, the location title at the bottom of the screen says, "Philadelphia, PA." Then, as the Declaration of Independence is being examined, Patrick says that he donated the Silence Dogood letters to "The Franklin Institute in Philadelphia." Finally, as the scene ends, Ben, Riley, and Abigail are in Patrick's car, driving through the night towards Philadelphia.
Continuity mistake: When the FBI storms into Ben Gates' apartment, an agent is researching the Silence Dogood letters on his Hewlett Packard laptop. However, the web browser displayed on his laptop is the Mac Safari browser. HP laptops don't run Mac software so the "photoshopped" shot of the web browser on the laptop was done on an Apple Mac.