... dry, moist, or rough fingerprints Product Description: The ACM500-A Reader is a USB fingerprint reader, the user simply places his or her ... data before sending it over the USB interface.The ACM500-A utilizes optical fingerprint scanning technology for superior quality and ... condensing· Scan data: 8-bit grayscale· Standards Compliance: FCC Class B, CE, ICES, BSMI, MIC, USB, WHQL Fingerprint Scanner