Based on your identification, choose the correct source:

To begin the recovery process, you must identify your specific hardware. Plug the device into your computer and open the Device Manager. Look for an "Unknown Device" or an entry under "Biometric Devices" with a yellow warning triangle. Right-click the item, select Properties, and navigate to the Details tab. Choose "Hardware Ids" from the dropdown menu. Most APC units will show a string like USB\VID_08FF&PID_2580, which confirms it uses an AuthenTec sensor.

: Sites like Solvusoft list a biopod driver (v. 2003-07-25) for download, though they often bundle this with driver update utilities.