Methods and systems provide for sharing of a network resource that
requires an authentication ID for access with a user not currently having
an authentication ID. A placeholder is generated in an access list
providing authorization for the network resource and the placeholder is
associated with a known identifier of the user. Upon the user obtaining
an authentication ID and attempting to access the network resource, the
authentication ID for the user is stored in the placeholder to establish
authorization for the user to the network resource. Several checks may be
made prior to storing the authentication ID within the placeholder,
including determining whether the user has verified obtaining the
authentication ID with the issuer, determining whether the authentication
ID of the user attempting access matches the authentication ID the issuer
has provided for the user, and determining whether the known identifier
stored in the placeholder matches a sign-in provided by the user.