Personal Self Digital Infrastructure
개인 자아 디지털 인프라
Duo in uno, unum in duo
A formal standard defining the architecture, principles, and taxonomy for systems that instantiate, operate, and govern persistent digital representations of individual human identity.
PSDI (Personal Self Digital Infrastructure) is the category of software systems that create, maintain, and govern persistent digital representations of individual human identity — called selves — across time, context, and physical-digital boundaries. A PSDI-compliant system implements the five core principles: Self Separation, Explicit Permission, Continuity of Context, Crisis Handoff Standard, and Embodiment Readiness.
§2.1 Normative Definition — PSDI Specification v1.0
Five Normative Principles
Self Separation
Each self-domain operates independently with its own data, context, and permission scope. No self inherits another's authority without explicit delegation.
Explicit Permission
Every cross-self interaction requires declared, auditable permission. Implicit access is not permitted under any circumstance.
Continuity of Context
A self retains longitudinal memory within its domain. Context must persist across sessions, channels, and time without degradation.
Crisis Handoff Standard
When a self cannot respond, control transfers to a designated fallback according to a declared protocol. No silent failure is acceptable.
Embodiment Readiness
A PSDI-compliant self must be capable of operating in physical contexts — voice, robotics, ambient computing — without architectural change.
Why a Standard Is Needed Now
Foundation models now make it technically feasible to instantiate persistent, context-aware digital selves at consumer scale.
Individuals maintain 7–12 digital identities across platforms with no shared context, creating compounding cognitive overhead.
Autonomous agents acting on behalf of individuals require a formal permission model to prevent unauthorized cross-domain action.
Humanoid robotics and ambient computing demand that digital identity infrastructure extend beyond screens into physical space.
Current Adopters
Soma & Mio operates 8 PSDI-compliant self-domains in production, serving as the reference implementation for v1.0.
Is your organization implementing PSDI? Submit an adoption declaration →