The paper announcing Bannister's death states that he was 54 when he died. But, when Alan loads his implant for the first time, it states that there are 544,628 life hours to review. That number of hours would make him over 62 years of age.
In the beginning of the movie he reviews the life of someone from birth..to death. It would be hard to imagine the implant being in before actual birth, plus since baby eyes don't focus for some six months, there wouldn't be clear images anyway.
When Bannister takes his daughter into his study, he closes the door. The visual record is shot along the length of his arm, so either his eyes are in the middle of his chest, or the camera was shooting from too low.
When Fletcher is threatening Alan, as we cut to a wide shot, his mouth stops moving but the audio continues.
When the movie dollies back to a wide shot of Alan doing his work with a large number of little screens in the background, one of the scenes on the left shows the supposed subject looking at a urinal. From there, the subject turns around and looks at a mirror, revealing a woman holding a camcorder.