The bar code won't 'scan'. [=the machine is unable to read the bar code]
The program is 'scanning' [='searching'] the computer's files.
She 'scanned' his face for any clue to what he was thinking.
(..) Then get to Banner. Time for a lullaby. I know you're hiding more than files. Hey, J. Gimme an IR scan of the room real quick. The wall to your left...I'm reading steel reinforcement and an air current. Please be a secret door, please be a secret door, please be a secret door... Yay! Hey big guy. (..)2015 Avengers: Age of Ultron