The e-Capsule? Private Browser is a family of "zero-footprint" products allowing unbeatable security and anonymity for your Web surfing and online transaction activities. The e-Capsule? Private Browser is today the only encrypted zero-footprint Internet browser for anonymous Web surfing without leaving any traces also on the local PC. Within the e-Capsule? Private Browser product family, the USB-U3 version is directed to owners of a U3 Smart device and users for which simplicity, security and mobility are the fundamental requirements. With a U3 device you can carry your software on the same USB flash drive that carries your files.