# Application access readback catalogue The readback pin's own registry (`FLEX-WP-0035`, `FLEX-DEC-2026-019`). It holds one entry per application that user-engine may list: id, display name, and the key-cape client its users sign in through. The entries are descriptive only and never decide an allow. Allow comes from each application's own package, which must declare `application.access`. Participants' registries are loaded alongside this one, and their packages are loaded at the same files their own pins run: | System | Package | Registry | | --- | --- | --- | | `informed-decision` | `examples/informed-decision-lifecycle/policy.md` (v2) | `examples/informed-decision-lifecycle/registry.json` | `client_binding` sources: `informed-decision/docs/keycape-client-registration.md` (`client_id`) and `informed-decision/informed_decision/oidc.py` (issuer).