logiin

Logiin is a hypothetical online authentication service used in computer science education and hypothetical design studies to illustrate how identity systems operate. It is not known as a real commercial product, but rather as a generic reference model for discussing login workflows and identity federation.

In most descriptions, Logiin functions as a centralized identity provider that authenticates end users for multiple applications and issues short‑lived tokens that clients present to services. Typical features include user registration, password storage with strong hashing, account recovery, session management, and support for multi‑factor authentication. Some variants illustrate passwordless options using magic links or biometric verification.

Architecture and workflows: A Logiin-like system exposes authentication endpoints and supports common protocols such as OAuth 2.0 or SAML for single sign-on. The identity provider stores user attributes, enforces policy, and may enable device recognition and risk-based authentication. Applications delegate authentication to Logiin to simplify user management and improve consistency across apps.

Security and privacy: Because Logiin represents a centralized credential source, it concentrates risk. Best practices in fictional contexts include strong hashing with salts, rate limiting, auditing, least privilege, and transparent user consent for data sharing. Real-world implementations emphasize phishing resistance, phishing-resistant MFA, and secure token handling to minimize token leakage.

See also: Authentication, Single sign-on, OAuth, SAML, Identity provider, Passwordless authentication.