The Synaptics WBDI Fingerprint Reader - USB 102 is a hardware device used to provide biometric authentication through fingerprint scanning. It's commonly found in laptops or desktop PCs that have a built-in fingerprint sensor, allowing users to log into their system, websites, or secure applications using their fingerprint as a more secure and convenient alternative to traditional passwords.

The driver for the Synaptics WBDI Fingerprint Reader enables your computer to communicate with the fingerprint scanner, allowing it to function correctly and be used for fingerprint recognition. The driver typically includes the necessary software for managing and configuring the fingerprint reader.