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A UUID is a 128-bit label used to ensure that a file has a unique name across different systems and databases. Unlike standard camera names like IMG_001 , which are sequential and prone to duplicates when merging folders, a UUID is designed to be "truly unique in the universe".

: The name consists of 32 hexadecimal characters (0–9 and A–F) divided into five groups.

: Many modern web applications, cloud storage services (like Google Photos or iCloud), and databases rename uploaded images to UUIDs to prevent naming collisions and to make it harder for unauthorized users to guess file names on a server. Technical Details of Your File