displayNameId

displayNameid is a term used in some software systems to denote a unique identifier associated with a user's display name. It is distinct from the textual display name itself and from the underlying primary user ID. The displayNameid is typically stable even when a user changes their display name, allowing systems to maintain consistent references to the same user while presenting a friendly name to others.

In data models, displayNameid is often stored as a string field in user or profile records, and may be generated as a UUID or other opaque identifier. When designing APIs, the field is commonly returned alongside the displayName to enable client applications to track the user across sessions and screens without tying UI text to identity.

Practical uses include indexing, caching, access control, and audit logging where a stable key is needed that remains constant while displayName may change. It is important to distinguish displayNameid from the primary key or accountId, which are usually intended to be immutable or secret.

Considerations include privacy and security: ensure proper access controls, avoid leaking internal identifiers, and implement proper validation, encoding, and length checks to prevent exposure or misuse. Variants exist in naming conventions across systems, such as displayNameId, display_name_id, or name_display_id, with implementation differences depending on data models and programming languages.