If the sensor works, enjoy the nostalgia. But for daily driving, disable it in BIOS to avoid driver conflicts and stick with a strong password or a modern USB security key.
In the early 2010s, laptop security was transitioning from simple passwords to biometric authentication. The Dell Latitude E6420, a staple of corporate IT departments, featured a now-obscure but historically significant component: the Broadcom USH (Unified Security Hub) with Swipe Fingerprint Sensor . broadcom ush w swipe sensor e6420