PHI stays in-boundary: direct identifiers become stable OPAQUE tokens, dates -> year, ZIP -> 3 digits, free text dropped; only de-identified data crosses to external AI; the vault re-associates server-side.
Playing the feature-by-feature training walkthrough (a dedicated clip for this feature can drop in later).
| in | name + date + ZIP + free-text note |
| name_out | TKN-874c20dc62eac4a0 |
| date_out | 2026 |
| zip_out | 303 |
| note_dropped | yes |
| reidentified | DOE, JOHN |