Spectra Systems Corporation invents, develops, and sells integrated optical systems in Rhode Island and internationally. It operates through three segments: Authentication Systems, Secure Transactions, and Banknote Cleaning. The company offers integrated solutions, including a system of taggant materials and sensor technology to authenticate banknotes that are used by central banks, as well as G7 country for passport security; banknote cleaning and disinfection systems that lifts sebum and other substances from the banknote through a dry process based on supercritical CO2 cleaning; and solutions to authenticate brand name products. 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 used to verify the accuracy of transactions logged by providers of lottery and gaming operators. In addition, the company offers software and hardware systems comprising high-speed currency authentication sensors; quality control equipment for use in paper and polymer banknote manufacturing and printing; and security printers and hologram makers. 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.