On Windows laptops, a red light on or near the webcam during the initial sign in process could be a sign that it features near infrared IR sensors used by Windows Hello for facial recognition. Windows Hello is Microsoft built in authentication system for Windows laptops that allows users to sign in using PIN, facial recognition, and fingerprint instead of the standard password based login. Apart from that, some laptops use a red dot instead of a red light as an indicator for the privacy...
