The Validity Sensor (VFS491) is a fingerprint sensor module produced by Validity Sensors, a company specializing in biometric authentication solutions. The VFS491 is commonly used in laptops and other devices for fingerprint scanning, enabling users to authenticate securely via their fingerprints rather than using passwords.
The Windows driver for the VFS491 allows the operating system to communicate with the sensor and enable its functionality, such as fingerprint recognition for login, secure access to applications, and encryption/decryption.