Checking person-specific access to computer systems or Internet, by performing access control continuously or at regular or irregular intervals e.g. using speech recognition

摘要

Access control takes place not only at the start of an access request, but also continuously or at regular intervals or stochastically at different time intervals during a user session. The access control may be provided in combination with conventional authorization methods such as PIN or token input. The access control is carried out at the start of the access request with content that varies in time and content. The content is generated by neutral speech generators, and repeated by the user requiring access.