Portable identity is the property of a digital identity that allows it to be carried by its owner across services, platforms, and trust domains without being locked to any single provider. It relies on user-held credentials and identifiers that any relying party can verify cryptographically. Portability is a core goal of decentralised and self-sovereign identity systems.
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- Portability is achieved by storing identifiers and verifiable credentials in user-controlled wallets rather than centralised account silos. Relying parties verify credentials against decentralised resolution methods (e.g. DID documents), enabling cross-platform login, reusable KYC, and reduced re-onboarding friction while keeping the user in control of disclosure.