Facial recognition technology involves translating facial characteristics from digital sources into numerical data for identification purposes, and it has become a significant topic in both tech and political discourse due to ethical considerations. Kairos API, a leading facial recognition platform, offers a user-friendly interface for integrating facial recognition capabilities into software, helping businesses combat identity fraud and enhance customer experiences. This guide provides a detailed walkthrough for building a facial recognition app using JavaScript, ReactJS, and Node.js, utilizing the Kairos API to create galleries for identifying individuals as friends or foes. It underscores the ease of integrating such technology into projects without requiring deep expertise in data science or neural networks, while also emphasizing the importance of ethical considerations in deploying facial recognition systems.