In the Itsme world everyone, and every enterprise, has an Itsme-website.  You get it when you're born, and use it to keep all your important records and documents, and to control other peoples' permission to use your Itsme-things.

Like your Itsme-mobile, it is unique, positive, private, and secure:

Unique means there can be no confusion as to whether it is indeed yours or somebody else's.

Positive means it is impossible to counterfeit, impersonate, or forge.

Private means no one, not any person, enterprise, agency, or government can observe or invade it.

Secure means no one and no catastrophe can cause anything in it to be lost, stolen, vandalized, or damaged in any way.