SPID (Sistema Pubblico di Identità Digitale) is Italy’s official public digital identity system. It enables individuals and businesses to securely access a wide range of public and private online services using a single set of login credentials. With over 34 million active accounts, SPID plays a key role in simplifying digital interactions across essential services like healthcare, tax filings, and more.How does SPID work? SPID operates as a centralized identity solution.