- A token is a string of characters that has a consistent meaning in a certain programming language. Examples of tokens could be keywords (if, else, while, int, ...), identifiers, numbers, signs, or an operator of several characters, (for example,: = "': +"').
- A security token is an electronic device that is given to an authorized user of a computerized service to facilitate the authentication process.
- A Token in the context of cryptocurrencies represents an alphanumeric string that can be a public key or a private key. For example this key issues 4J78t1JpYZ73BNXQviedrnyiArnsNRhKNGe is a Token.