slipneff/FaceID ? reverse-engineered prompt

Build me a simple Face ID app for Windows in Python that uses the webcam to recognize a person and let them in if their face matches a saved identity. I want a setup screen where I can configure or update the approved face, and a main screen that checks the camera, finds a face, compares it to the saved one, and shows whether access is granted or denied.

Please make it work as a small Windows friendly app, with an easy way to start it automatically from the included batch file. There should also be a default password file or fallback value for first time setup, and the app should be able to run without a lot of manual steps. Keep the interface simple, since this is for coursework and basic use, but make sure the face detection and recognition part actually works with a webcam. If you need to look up current docs or examples online, go ahead.