Thus he is invited to declare himself at an affiliation. Besides universities, every institution, e.g. public libraries, industries, private organizations, etc. could run an affiliation. They should provide public terminals for authors.
All affiliation know each other.
If a new person applies for membership in an affiliation, all other affiliations get a note about that intention. Some data, necessary to identify that person worldwide in a unique way are compulsory e.g. his name, nationality, location and date of birth, passport number, etc. All other data, not necessary to identify that person, are voluntary. A group of affiliations, e.g. the universities of a country, could also agree to a standard personal home page for authors, checked for correctness by the affiliation, together with codification of it, so that algorithms can use it for LT-filtering, etc. The affiliation is responsible for data security.