The present invention is a portable client PDA with a touch screen or other equivalent user interface and having a microphone and local central processing unit (CPU) for processing voice commands and for processing biometric data to provide user verification. The PDA also includes a memory for storing...http://www.google.ca/patents/US6016476?utm_source=gb-gplus-sharePatent US6016476 - Portable information and transaction processing system and method utilizing biometric authorization and digital certificate security
