>upon booting up, FLUDD is a machine and has no prior knowledge of the world
>totally unaware of Mario being famous and all that
>it can use facial recognition on any customer and do a quick background check on anyone
>instantly figures out Mario's name and address in a few seconds
>most likely because the NSA Gadd Science, Inc. keeps a large "customer" database
>one that collects the personal information of every citizen in the Mushroom Kingdom
>FLUDD somehow also has surveillance footage from 3 of Mario's previous adventures
>footage that shouldn't even exist in the first place, but was likely collected through mass surveillance of Mario's entire world
>the only way to protect your identity from FLUDD is by completely anonymizing your identity
>Bowser Jr. managed to fool its facial recognition software by disguising himself as Shadow Mario
>leaving FLUDD unable to assess its "customer" database and mass surveillance to detect who he was
<TL;DR - FLUDD and Gadd Science, Inc. are the NSA of the Mario universe