• VindictiveJudge@lemmy.world
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    9 months ago

    My guess: a count increments upward when the entrance door swings open and downward when the exit door swings. If one person holds the door for a few people but they exit individually, the count gets messed up.

    • Bannanable@feddit.nlOP
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      9 months ago

      You have to scan your student card on entrance and exit but I think it gets messed up if someone gets put through by the desk staff without scanning.