Use the individuality of human fingerprint features to prevents unauthorized access to your computer without permission. The fingerprint information can be correctly judged whether it is a live or copied fingerprint, it only compares the living fingerprint information and enhances the safety. Specifications: Main color: black Material: plastics CPU: 144 MHz Fingerprint-image size: 192 * 192 (pixel), 508DPI Fingerprint registration capacity: default 1000, which can be extended to 5000 False identification rate: <0.001 % Rejection rate: <0.1 % Item size: 65 * 35 * 25mm / 2.6 * 1.4 * 1.0in Item weight: 36g / 1.3ounce Package size: 135 * 100 * 35mm / 5.3 * 3.9 * 1.4in Package weight: 70g / 2.5ounce Packing List: 1 * Fingerprint Reader (with USB Cable)