ThinkFinger is a driver for the UPEK/STMicroelectronics fingerprint reader. The device is usually found either as a standalone USB device, built into USB keyboards or built into laptops (usually from Dell, IBM/Lenovo and Toshiba). . pam_thinkfinger is a Pluggable Authentication Module that allows the user authenticates through his fingerprint. . The recommended package thinkfinger-tools can be used to acquire, verify and automatically store user fingerprints.