When the guy has unlocked the box he is using a stethoscope but in the next scene he is putting it on the table.
When she holds the tape at the beginning she holds it horizontally by the sides but in the next scene she is holding it vertically then she is holding it horizontally by the bottom.
Just after the half hour mark, when trying to work out the combination to "The Room", Jess says "Eight digits? That's a date. Day, month, four-digit year", they then proceed to try a number of different dates but all in "Month, day, four-digit year" format, not "Day, month, four-digit year" as stated.