Creating a development environment

First of all I don’t know if I need to re-train a model, which would not work on the RPI5 from what I’ve gathered.

I want to verify that the face walking by my camera belongs to me, which I think would be called face-verification and not recognition?
I found this on the forums. How would I re-train it to work with my specific chip? I’ve got the 26 TOPS chip