Liveness Detection

Liveness detection refers to the process of verifying that a person is physically present and alive during biometric authentication, particularly in facial recognition systems. It aims to distinguish between a live person and a presentation attack using fake biometric inputs such as photographs, videos, or masks.

Liveness detection techniques employ various methods to ensure the vitality of the subject. These can include analyzing physiological characteristics like blinking, eye movement, or blood flow, or assessing behavioral cues such as facial expression changes or response to stimuli. By actively verifying the liveness of a person, this technology enhances security and reduces the risk of fraudulent activities or unauthorized access, therefore preventing potential misuse of biometric systems.