I just did research on this.

Clearview vs Introthem:

- Clearview does photo-to-photo matching. We don't do that, and I don't think I will ever build that.

- You have to provide the name, then we build the faces collection for analyzing at search time and delete it.

- We don't retain any face collection once the search is done.

I still don't know if I am breaking any laws, but here is how Introthem works.