In the episode "For Art's Sake" (S02E10) of the 1988 run of Mission: Impossible when Nicholas, disguised as Minister Ocha, is lead by Travers into his vault, he achieves to film Travers typing a numbered door code into the panel next to the vault door, using some kind of pin camera. But later, when Grant and Max break into Travers' vault to mess with his paintings, they use some kind of code cracking device to determine and type in the code.
But why did they need this elaborate method of cracking the code at all? Shouldn't they have known the code from Nicholas' camera and could have just typed it in normally? Or was it that they didn't want to touch the code panel for some reason? Was this just some kind of inconsistency or did I maybe miss anything here that makes this a little more coherent?