Definitions[edit | edit source]

European Union[edit | edit source]

A user ID is a

unique identifier allocated to persons when they subscribe to or register with an Internet access service or Internet communications service.[1]

General[edit | edit source]

A user ID is a

[u]nique symbol or character string used by an information system to identify a specific user.[2]

References[edit | edit source]

See also[edit | edit source]

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