Electronic Identification (eID), also sometimes called Electronic Identity Verification (eIDV), is a digital identity verification method that uses authoritative databases, both private and public, to identify people online. Often, government registries, utility services, and other databases, depending on the particular use case, are used for user verification. Electronic Identification is designed to check personal details, such as the person’s name, date of birth, address, or Social Security Number (SSN), and confirm that all these data pieces are legitimate by cross-checking them against at least a few databases.
In practice, eID can be achieved by implementing the 2+2 verification process, which cross-references the user’s onboarding data (name, address, etc.) against two other official, high-quality databases as a way to comply with regulatory compliance requirements, especially Know Your Customer (KYC) verification or, depending on the jurisdiction, eIDAS in Europe.