Essential Feature: Unkown face database and search.

The camera records all faces on the property.

A crime occurs on your property, and the perpetrator’s face is captured.

You want to check if this person has ever been on your property before—but currently, you cannot.

An essential feature for meaningful security is retrospective face search: given a new face image (e.g., from a crime), you should be able to search all previously captured unknown faces to see if it appears.

Currently, neither Frigate, CompreFace, nor Double-Take offer this capability. None of them provide access to an AI-managed folder or API that would allow a user to implement such a script. Yet without this feature, these systems fall short of enabling a practical, effective security setup.

A natural extension of this functionality would be to automatically create “unknown” profiles for unrecognized faces. Future detections could then either be assigned to an existing profile or generate a new one if necessary.

Software like Impromatch does provide this functionality, but it lacks integration with Home Assistant.

I’ve submitted feature requests to both Double-Take and Frigate—implementing retrospective face search would be transformative for security setups.