Product Description
The U.are.U 4000 is a USB fingerprint sensor
designed for use with DigitalPersona’s U.are.U
applications and developer tools.
The user simply places his/her finger on the
glowing sensor window, and the device quickly and
automatically captures the fingerprint image. Onboard
electronics calibrate the device and encrypt
the image data before sending it over the USB
interface.
DigitalPersona. products utilize optical fingerprint
scanning technology for superior image quality and
product reliability. The U.are.U 4000 Sensor and
DigitalPersona recognition software have an
unmatched ability to recognize even the most
difficult fingerprints.

Applications
Desktop PC security
Mobile PCs
Custom applications
Home and Office Use

Features
Small form factor
Excellent image quality
Encrypted image data
Latent print rejection
Counterfeit image rejection
Rotation invariant
Rugged
Works well with dry, moist, or
rough fingerprints
Challenge response link
Compatible with all U.are.U
applications
Drivers support Windows 98, Me,
NT 4.0, 2000, XP

Key Specifications
Pixel resolution:
512 dpi (average x,y over the field)
Image capture area:
14.6 mm (nominal width at center)
18.1 mm (nominal length)
8-bit grayscale (256 levels of gray)
Sensor size: approx. 79 mm x 49 mm x 19 mm
Compatible with USB specifications 1.0, 1.1, 2.0