Spectra Systems Corporation invents, develops, and sells integrated optical systems in the United States and internationally. It operates through four segments: Authentication Systems, Secure Transactions, Security Printing, and Banknote Cleaning. The company offers integrated solutions, including a system of taggant materials and sensor equipment to authenticate banknotes and security documents; and banknote cleaning and disinfection systems. It also provides optical materials for security and quality control, such as fluorescent and phosphorescent pigments and dyes, invisible pigments and dyes, and gasochromic response materials; customized materials and hardware solutions; and internal control systems for real-time fraud control and risk management used by lottery and gaming operators. In addition, the company offers software and hardware systems comprising high-speed currency authentication sensors; conventional and hybrid postage stamps, tax stamps, vouchers, coupons, certificates, and high-security documents. The company was formerly known as Spectra Science Corporation and changed its name to Spectra Systems Corporation in June 2001. Spectra Systems Corporation was incorporated in 1996 and is headquartered in Providence, Rhode Island.