The Facial Recognition API is a tool that enables developers to integrate computer vision into their web and mobile applications using a convenient and easy-to-use interface. The API allows for face detection, recognition, and analysis, making it useful for various applications such as authentication, entertainment, and photo editing. To use the API, developers need to obtain an API key and subscribe to a plan that suits their needs. The API provides several endpoints for managing albums, detecting faces, recognizing people, and rebuilding albums. By using the Face Recognition and Face Detection API, developers can build applications that can recognize users' faces and grant access to authorized individuals. In this tutorial, we created a simple Flask application that uses the API to authenticate users based on their face recognition. The application allows users to take photos of themselves and upload them to the server for analysis by the API. If the API recognizes the user's face as an admin, they are granted access to the admin panel.