Definition of "identifier" []

• Someone who identifies; a person who establishes the identity of. (noun)
• Something that identifies or uniquely points to something or someone else. (noun)
• A guidebook that helps determine the specific class of an object (such as a mushroom, herb, fish, bird, drug, or mineral), or its individual identity (such as that of a star). (noun)
• A formal name used in source code to refer to a variable, function, procedure, package, etc. or in an operating system to refer to a process, user, group, etc. (noun)
• A primary key. (noun)

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• "The idea that Google would have stopped using the cookie as user identifier is rediculous."
• "My natural identifier is my MAC address, and I would love the world to have a MAC-based Wifi for all, including an automated enforced return of stolen property: it would be safer, more secure, more convenient, obviouly more intuitive and easier."
• "A thinglink identifier is based on the idea that many of the things we use in our daily life are quite particular."