The U. are. U 4500 is an optical USB 2.0 fingerprint scanner that is able to reject latent or spoof fingerprints. The U. are. U 4500 HD model also features high durability sensor coating. Specifications Scanner Name U. are. U 4500 Reader Manufacturer Digital Persona / HID Global Connection USB 2.0 Supported OS (*) Microsoft Windows (32-bit and 64-bit) Linux x86 (32-bit and 64-bit) ARM Linux (32-bit and 64-bit) Android Resolution 512 ppi Image capture area (Platen size) 15 x 18 mm ( 0.6" x 0.7" ) Sensor type Optical Illumination Blue LEDs Device size 65 x 36 x 16 mm ( 2.6" x 1.4" x 0.6" ) Operating temperature 0°C ~ +40°C Operating humidity 20-80 % (non-condensing)