Facial Recognition, explain what the biometric is and briefly how it works.

Question

19-07-2024
Computers and Technology

High School

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Facial Recognition, explain what the biometric is and briefly how it works.

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utkarshsingh1281 utkarshsingh1281 · Answer 1 · 2024-10-18T15:44:17-04:00

Facial recognition is a biometric technique that uses distinctive facial features to verify identity. It involves capturing and comparing facial attributes with stored data. Examples include iPhone's Face ID which uses a 3D map of the face for authentication.

The process involves two key steps:

Feature Extraction: The system detects and measures specific facial features such as skin texture, wrinkles, distances between various facial landmarks (e.g., eyes and nose), and creates a mathematical model of these characteristics.
Comparison: The captured data is then compared with pre-stored values in a secure database. If the new data matches the stored data, access is granted.

For example, iPhone's Face ID technology utilizes around 30,000 infrared dots to create a 3D map of the user's face, which is then matched against the stored map in the Secure Enclave for authentication.

However, the system can sometimes be fooled by masks, make-up, or 3D face replicas, highlighting the need for continuous improvements such as integrating thermal imaging to enhance accuracy.