Publicly listed software company headquartered in Chicago, Illinois, USA who author authentication products for e-business and e-commerce. Its Digipass security products are small "calculator" hardware devices carried by an end user, or in a software format on mobile phones, other portable devices, and PCs. See www.vasco.com

VASCO Data Security International, Inc. (VASCO) is a public company with NASDAQ symbol VDSI which was founded in 1997.