Strong authentication and e-signatures fitting in the palm of your hand. The handheld Digipass 300 provides financial institutions and other companies with a secure means of customer or employee identification and authentication for remote access to their computer systems and networks. The Digipass 300 is ideally suited for large public banking applications such as telebanking, home banking, PC banking, phone banking and Internet banking where authentication and e-signatures are key requirements. The user interface has been conceived to work in an intuitive way, requiring a minimum number of keystrokes, so that the user can start using the Digipass 300 almost without referring to a user guide. Thanks to the optical interface, the user can even read challenges directly from the computer screen. The Digipass 300 benefits from all existing programming and authentication software that already supports the other Digipass family members.