PERSONAL IDENTIFIER SIGN-IN FOR ORGANIZATIONAL USERS

A method and system performed by a computing system for signing in using personal identifiers input via a sign-in portal that supports multiple tenants is provided. The system receives a sign-in request for a user that includes a personal identifier. The personal identifier uniquely identifies a person but does not include an identification of a tenant. The system performs a verification based on the personal identifier to authenticate the user. The system identifies, from a mapping, a tenant to which the personal identifier is mapped. The mapping maps personal identifiers of users to tenants. The system retrieves, from a user store for the tenant, user information relating to the user. The system then creates a security token based on the user information. If verification of the user was successful, the system sends the security token to the sign-in portal as evidence that the user has been authenticated.