Tricking a computer is of course very different to tricking a person.

It uses a whole other skill, and a different set of dice modifiers.

Transcript

C-3PO: You heard Princess. Let's get out of here.
R2-D2: There's something I need to do first.
C-3PO: Can't you do it later?
R2-D2: Okay, let's fly our slow, defenceless escape pod past the star destroyer's guns first, and then I'll disable them.
C-3PO: I always knew your piloting skills weren't up to scratch.
R2-D2: I got us to Tatooine, didn't I?
C-3PO: By tricking the ship's computer into thinking you were Captain Antilles.
R2-D2: And we made it in one piece this time, unlike when Bail Organa was in command.
C-3PO: The ship's about to be destroyed!
R2-D2: Who cares? We're about to recover my dreadnought.
R2-D2: My beautiful, precious dreadnought.
C-3PO: If you love it so much, why don't you marry it?
R2-D2: Hey, I'm a droid. I've thought about it.
{beat}
C-3PO: Ewww.