mdshoaib126/face-based-authentication ? reverse-engineered prompt

Build me a simple web app for face based sign up and sign in.

I want users to be able to register with their name, email, mobile number, and gender, then capture a face image from their camera and save it. After that, they should be able to come back and sign in just by scanning their face, and the app should compare the face data to what was saved and let them in if it matches.

Please keep it clean and easy to use, with a modern interface and basic validation so people can tell if they missed a field or if face capture failed. Store the user data locally in the browser so it works without a backend, and show the user’s last sign in time after a successful login. Use face recognition for the camera part, and if you need to check current docs or best practices for the face library, look them up online.