6. Privacy Considerations

Tokens employed in the context of the functionality described herein may contain privacy-sensitive information and, to prevent disclosure of such information to unintended parties, MUST only be transmitted over encrypted channels, such as Transport Layer Security (TLS). In cases where it is desirable to prevent disclosure of certain information to the client, the token MUST be encrypted to its intended recipient. Deployments SHOULD determine the minimally necessary amount of data and only include such information in issued tokens. In some cases, data minimization may include representing only an anonymous or pseudonymous user.