The SecuGen Hamster IV (Model: HSDU04P) is a USB-connected optical fingerprint reader designed for authentication, identification, and verification use cases. It is classified as a legacy product within SecuGen's lineup. The device uses an SDU04P contact-type optical sensor based on SecuGen's patented SEIR (Sensing with Enhanced Image Resolution) fingerprint biometric technology. It captures fingerprint images at 508 DPI with a 258x336 pixel resolution and 256 grayscale levels (8-bit), using an LED light source. The Hamster IV is FBI Certified, meeting PIV, FIPS 201, and Mobile ID FAP 10 compliance requirements under the FBI's Next Generation Identification (NGI) Image Quality Specifications (IQS). It also conforms to biometric standards including INCITS 378, ISO/IEC 19794-2, ISO/IEC 19794-4, NIST MINEX, and WSQ. Key hardware characteristics include: - Platen size: 14.6mm x 17.9mm; Sensing area: 12.9mm x 16.8mm - Dimensions: 53x73x84mm (with stand), 27x40x73mm (without stand) - Weight: 165g (with stand), 100g (without stand) - Cable length: 1500mm; Interface: USB 1.1 Full-Speed / USB 2.0 Hi-Speed - Operating temperature: -20°C to 65°C; Humidity: up to 90% RH (non-condensing) - Regulatory compliance: FCC, CE, KC, RoHS, WHQL Software-dependent features (when used with SecuGen SDKs) include Auto-On (automatic finger detection), Smart Capture (self-adjusting scanning), Device Recognition (device authentication), and 360-degree fingerprint rotation. Fingerprint template encryption is supported when using SecuGen's proprietary template format. The sensor also performs latent print rejection. Supported operating systems: Windows 11/10/8.1/7, Windows Server 2022/2019/2016/2012/2008 R2, Android 3.1+, and Linux.